Mostly clear. Temperature 20 °C 68 °F; High Temperature 23 °C 73 °F; Low Temperature 17 °C 63 °F; Sunshine Hours 8 hours; Rainfall 50 mm; Rainfall Days 8 days : Hours of sunshine, Hi : Average high in ºF - Lo : Average low in ºF - Pre. Frost Advisory in effect from Monday, 3:00 AM PST until Monday, 9:00 AM PST. On January 10, the cloudiest day of the year, the sky is overcast or mostly cloudy 59% of the time, and clear, mostly clear, or partly cloudy 41% of the time. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray. Get the monthly weather forecast for St. Helena, CA, including daily high/low, historical averages, to help you plan ahead. Strongest 6 June, 2020 … The average maximum temperature lies around 21.7°C (71.06°F). The US average is 38 inches of rain per year. Showing: All Year Climate & Weather Averages in Jamestown. To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. Change Location . The clearer part of the year in Saint Helena begins around May 15 and lasts for 5.2 months, ending around October 22. The average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. There are 4 weather stations near enough to contribute to our estimation of the temperature and dew point in Saint Helena. In this report, we use a base of 50°F and a cap of 86°F. Showing: All Year Climate & Weather Averages in Jamestown. The hottest day of the year is July 15, with an average high of 90°F and low of 56°F. Av. The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions, excluding hours in which the mean wind speed is less than. Those scores are combined into a single hourly composite score, which is then aggregated into days, averaged over all the years in the analysis period, and smoothed. The City of St. Helena is seeking volunteers to serve on various boards, committees and co 12/08/2020 | COVID-19 Testing and Case Data Report for Tuesday, December 8, 2020 View all News Annual Weather Averages in Helena. A low pressure system will bring widespread gusty winds, rain, and mountain snow to the Pacific Northwest and northern Rockies, before spreading into the Plains and Upper Mississippi Valley by Wednesday. The best time of year to visit St. Helena in United States of America. These times of year are fairly slow with tourists. Keep going a little further and join the line at Gott's Roadside for a burger and milkshake. The most rain falls during the 31 days centered around February 16, with an average total accumulation of 5.3 inches. We assume no responsibility for any decisions made on the basis of the content presented on this site. Average Weather during December in St. Helena (California), United States of America. In Saint Helena, the average percentage of the sky covered by clouds experiences extreme seasonal variation over the course of the year. April is a dry month with an average of 29mm (1.1in) rain. 59°. This month should be avoided if you are not a big fan of rain. Within 50 miles contains large variations in elevation (4,764 feet). Over the course of the year, the temperature typically varies from 36°F to 90°F and is rarely below 27°F or above 100°F . Northwest winds 5 to 10 mph. The wetter season lasts 5.3 months, from October 31 to April 8, with a greater than 16% chance of a given day being a wet day. La Gomera

Southern Asia (Any), Get your weekly fix of holiday inspiration from some of the world's best travel writers plus save on your next trip with the latest exclusive offers. The topography within 2 miles of Saint Helena contains very significant variations in elevation, with a maximum elevation change of 896 feet and an average elevation above sea level of 376 feet. To characterize how pleasant the weather is in Saint Helena throughout the year, we compute two travel scores. Earthquake activity: St. Helena-area historical earthquake activity is near California state average. The average minimum temperature (usually the minimum temperature is noted during the night) in St. Helena in July is 15.0°C (59°F). At an average temperature of 21.7 °C | 71.1 °F, July is the hottest month of the year. Based on the tourism score, the best time of year to visit Saint Helena for warm-weather activities is from late June to mid September. The thin dotted lines are the corresponding average perceived temperatures. Winds W at 5 to 10 mph. Averages are for Saint Helena Island, which is 4 miles from Jamestown. 52.1 ºF: 52 ºF: Total precipitation Total precip. Based on weather reports collected during 2005–2015. High 93F. The calmer time of year lasts for 6.8 months, from August 21 to March 13. Get the monthly weather forecast for St. Helena, CA, including daily high/low, historical averages, to help you plan ahead. The rainy period of the year lasts for 8.0 months, from September 28 to May 27, with a sliding 31-day rainfall of at least 0.5 inches. From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night. St. Helena averages 0 inches of snow per year. Weather Underground provides local & long-range weather forecasts, weatherreports, maps & tropical weather conditions for the St Helena area. The stations contributing to this reconstruction are: Sonoma County Airport (35%, 30 kilometers, west); Napa County Airport (25%, 37 kilometers, southeast); Gnoss Field (22%, 40 kilometers, south); and Nut Tree Airport (18%, 47 kilometers, east). The earliest sunrise is at 5:45 AM on June 13, and the latest sunrise is 1 hour, 51 minutes later at 7:36 AM on October 31. The average daily incident shortwave solar energy experiences extreme seasonal variation over the course of the year. The percentage of time spent in various temperature bands. Meanwhile, San Rafael’s winters are cold and short with highs of 59°F and lows of 42°F. Based on weather reports collected during 1985–2015. See the current St. Helena, NC weather and a 5 day forecast. Find out more about our data sources . Climate (2011–Present) Petaluma Municipal Airport (18 miles) Take a look at our website widgetsAvailable free! This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. support@__remove_this_part__weatherspark.com. One still should be able to carry on ordinary outdoor activities. high : Average high in ºF - Av.low : Average low in ºF - Av. High Temp: 86 °F. The day of the year with the coolest water is May 11, with an average temperature of 52°F. Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night. Based on weather reports collected during 2005–2015. Current Weather St. Helena, CA Last Responded: 8:03pm CST, November 23, 2020. USA, CA #9. Within 10 miles contains very significant variations in elevation (2,841 feet). Search and filter St. Helena homes by price, beds, baths and property type. View Today's Hourly Forecast. The coldest month is December with an average maximum temperature of 12°C (53°F). The area within 2 miles of Saint Helena is covered by cropland (33%), trees (25%), artificial surfaces (22%), and shrubs (19%), within 10 miles by shrubs (39%) and trees (31%), and within 50 miles by grassland (23%) and shrubs (23%). Saint Helena is located near a large body of water (e.g., ocean, sea, or large lake). Based on this score, the best time of year to visit Saint Helena for hot-weather activities is from mid June to late August, with a peak score in the third week of July. We … The data show a few interesting facts that do not accord with island folklore: Find Out More.
Costa Almeria

Mauritius St. Helena gets some kind of precipitation, on average, 71 days per year. On average, there are 263 sunny days per year in St. Helena. Our precipitation score, which is based on the three-hour precipitation centered on the hour in question, is 10 for no precipitation, falling linearly to 9 for trace precipitation, and to 0 for 0.04 inches of precipitation or more. Average Weather in Jamestown St. Helena In Jamestown, the summers are comfortable, muggy, arid, and partly cloudy; the winters are long, cool, dry, and mostly cloudy; and it is windy year round. Average High Average Low Record High Record Low Average Precipitation. Venetian Riviera South East Asia (Any) Ecuador Gran Canaria China Tunisia You will never forget a trip to the Grand Canyon. × St. Helena (/ h ə ˈ l iː n ə / hə-LEE-nə; Wappo: Anakotanoma, "Bull Snake Village") is a city in Napa County, in California's Wine Country, part of the North Bay region of the San Francisco Bay Area.The population was 5,814 at the 2010 census.. Saint Helena, CA 5-Day Forecast. Chance of rainfall chart with likely precipitation and statistics in live rain gauge St Helena Rainfall Forecast, CA 94574 - WillyWeather The windier part of the year lasts for 5.2 months, from March 13 to August 21, with average wind speeds of more than 6.7 miles per hour. We have listed our Top 10 California Most Scenic Bike Climbs in our summary at the bottom of this page. St. Helena, Saint Helena - Travel and vacation weather averages, current conditions and forecasts. The hot season lasts for 4.0 months, from June 5 to October 5, with an average daily high temperature above 83°F. The drier season lasts 6.7 months, from April 8 to October 31. NOAA National Weather Service National Weather Service. Intervals of clouds and sunshine in the morning with more clouds for later in the day. Winds WNW at 10 to 20 mph. The average hourly wind speed in Saint Helena experiences mild seasonal variation over the course of the year. Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database . Average precipitation in : Av. The average growing degree days accumulated over the course of the year, with 25th to 75th and 10th to 90th percentile bands. Saint Helena, CA Weather. precipitation in. The wind is most often from the west for 7.6 months, from February 29 to October 17, with a peak percentage of 72% on July 30. Average Weather at Gough Island St. Helena. And where? For each station, the records are corrected for the elevation difference between that station and Saint Helena according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations. We rated the following activities from 1 (least suitabl Based on this score, the best time of year to visit Saint Helena for general outdoor tourist activities is from late June to mid September, with a peak score in the last week of July. Weather.com brings you the most accurate monthly weather forecast for with average/record and high/low temperatures, precipitation and more. Annual Weather Averages Near Jamestown. St Helena, Warwickshire, United Kingdom - Monthly weather averages including average high and low Temperature, Precipitation, Pressure, Wind Charts to assist you in planning your travel, holiday or an outdoor activity at St Helena, United Kingdom Our tourism temperature score is 0 for perceived temperatures below 50°F, rising linearly to 9 for 65°F, to 10 for 75°F, falling linearly to 9 for 80°F, and to 1 for 90°F or hotter. St. Helena averages 0 inches of snow per year. Monthly average temperatures, rainfall, snow days & record high and low temperatures The summers in San Rafael are long and comfortable with an average high temperature of 76°F and a low temperature of 54°F. Visibility 10 mi. In 2020, the shortest day is December 21, with 9 hours, 29 minutes of daylight; the longest day is June 20, with 14 hours, 51 minutes of daylight. 88.0 ºF: 86 ºF: Average low temperature Av. 0.00 inch: 0.28 inch: Total snowfall Total snowfall - inch: 0 inch: Highest max temperature Highest max temp. Average Weather during August in St. Helena (California), United States of America. Figures in brackets [] are percentages of the annual total.. The shaded overlays indicate night and civil twilight. Also view: monthly average temperatures, precipitation, snow depth, wind speed, air quality and pollution. Saint Helena average temperature. Jamestown or Half Tree Hollow - will be higher and rainfall lower). The coldest day of the year is December 31, with an average low of 36°F and high of 54°F. The time in which the moon is above the horizon (light blue area), with new moons (dark gray lines) and full moons (blue lines) indicated. This has got to be one of the mildest climates whose averages are close to a typical "room temperature" much of the year. Mt. High Temp: 76 °F. Once you get to St. Helena... Tour Hall Winery; its modern art collection includes a 35-foot stainless steel bunny at the winery's entrance (you can't miss it! Figures in brackets [] are percentages of the annual total..

This nation-wide website presents information about the weather and climate for almost every country around the world.Learn more. Our cloud cover score is 10 for fully clear skies, falling linearly to 9 for mostly clear skies, and to 1 for fully overcast skies. A Large Storm To Track Across The U.S. A large storm system will track from the Southwest into the … Over the course of the year, the temperature typically varies from 36°F to 90°F and is rarely below 27°F or above 100°F. The amount of rain in July is extremely low with an average of 0mm (0.0in). St. Helena gets some kind of precipitation, on average, 71 days per year. Monthly average temperatures, rainfall, snow days & record high and low temperatures msn back to msn home weather records and averages powered by Microsoft News Outlook. Sonora Pass West. March 2019 cost of living index in St. Helena: 156.3 (very high, U.S. average is 100) St. Helena, CA residents, houses, and apartments details. Average Weather during September in St. Helena (California), United States of America. On average, there are 263 sunny days per year in St. Helena. This page contains what we believe are the most scenic bike climbs in the California. The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed (both rain and snow fell in the same day). The number of hours during which the Sun is visible (black line). The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds. Saint Helena Weather by month // weather averages Get the monthly weather forecast for St. Helena, CA, including daily high/low, historical averages, to help you plan ahead. (Weather station: Wide Awake Field Ascension Island, Saint Helena). The US average is 28 inches of snow per year. In Saint Helena, the summers are long, hot, arid, and mostly clear and the winters are short, cold, wet, and partly cloudy. The amount of rain in December is high with an average of 82mm (3.2in). Saint Helena is located in Northern California, a place which many people agree has some of the best weather in the entire world. high temp. September is a dry month with an average of 7mm (0.3in) rain. The brighter period of the year lasts for 3.5 months, from May 8 to August 24, with an average daily incident shortwave energy per square meter above 7.2 kWh. On average, it rains or snows a fair amount: 5 to 9 times per month. Today Mostly Clear. Geysers Road South. Saint Helena experiences extreme seasonal variation in monthly rainfall. : Average precipitation in inch - Days precip. The predominant average hourly wind direction in Saint Helena varies throughout the year. St. Helena. Average Weather during April in St. Helena (California), United States of America. low temp. If you are having trouble, please contact Customer Service at [email protected], or by phone at 1-800-665-1362.Our business hours are 8:00am to 4:00pm CST. The percentage of time spent at various humidity comfort levels, categorized by dew point. Weather is too cold this time of year in St Helena to be enjoyable for warm weather travelers. Change Location. This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid. St. Helena has dry periods in May, June, July, August and September. 44 F Charles M. Schulz-Sonoma County Airport Station | Report. Average Weather during July in St. Helena (California), United States of America. The time of year with cooler water lasts for 3.1 months, from March 23 to June 27, with an average temperature below 53°F. July is the hottest month for St. Helena with an average high temperature of 88.8°, which ranks it as about average compared to other places in California. A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The average minimum temperature (usually the minimum temperature is noted during the night) in St. Helena in September is 13.0°C (55.4°F). The rainless period of the year lasts for 4.0 months, from May 27 to September 28. For the purposes of this report, the geographical coordinates of Saint Helena are 38.505 deg latitude, -122.470 deg longitude, and 249 ft elevation. The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands. The St Helena Independent is available for sale on St Helena at the following stores. July is the driest month of the year. 71.1 ºF -Highest min temperature Highest min temp. Report Station. See the current St. Helena, CA weather and a 5 day forecast. The growing season in Saint Helena typically lasts for 8.8 months (267 days), from around February 29 to around November 22, rarely starting before January 25 or after April 4, and rarely ending before November 1 or after December 19. The least rain falls around July 28, with an average total accumulation of 0.0 inches. Also view: monthly average temperatures, precipitation, snow depth, wind speed, air quality and pollution. St Helena rain forecast information. The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands. July is the hottest month for St. Helena with an average high temperature of 88.8°, which ranks it as about average compared to other places in California. Find homes for sale and real estate in St. Helena, CA at realtor.com®. On July 19, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 91% of the time, and overcast or mostly cloudy 9% of the time. Unsettled in the Northwest; Above Normal Temperatures for Much of the Country. Over the course of the year, the temperature typically varies from 46°F to 64°F and is rarely below 40°F or above 70°F. Thank you for reporting this station. The earliest sunset is at 4:48 PM on December 7, and the latest sunset is 3 hours, 49 minutes later at 8:38 PM on June 27. Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations. The US average is 28 inches of snow per year. Based on growing degree days alone, the first spring blooms in Saint Helena should appear around February 20, only rarely appearing before February 7 or after March 7. The average minimum temperature (usually the minimum temperature is noted during the night) in St. Helena in April is 8.0°C (46.4°F). St. Helena, CA. St. Helena, CA climate is warm during summer when temperatures tend to be in the 70's and cold during winter when temperatures tend to be in the 40's. 46°. Excessive Heat Warning in effect until 9:00 PM PDT. See the current St. Helena, CA weather and a 5 day forecast. San Rafael, CA Weather. : Days with precipitation - Hours sun. St Helena Weather Forecasts. Weather data is prone to errors, outages, and other defects. The average minimum temperature (usually the minimum temperature is noted during the night) in St. Helena in September is 13.0°C (55.4°F). 99.0 ºF -Lowest max temperature Lowest max temp. The City of St. Helena has its own sensor located at the Parks & Recreation Department building on Railroad Ave. Other Air Quality Reporting Agencies: Bay Area Air Quality Management District (Air District) The California wildfire season takes place between spring and early fall. Our beach/pool temperature score is 0 for perceived temperatures below 65°F, rising linearly to 9 for 75°F, to 10 for 82°F, falling linearly to 9 for 90°F, and to 1 for 100°F or hotter. Averages are for Saint Helena Island, which is 4 miles from Jamestown. The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Maps are © Esri, with data from National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, and iPC. July is the driest month. Humidity 50%. The cool season lasts for 2.9 months, from November 24 to February 20, with an average daily high temperature below 61°F. Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory. The horizontal axis is the day of the year, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day. The average hourly temperature, color coded into bands. The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. The windiest day of the year is June 14, with an average hourly wind speed of 7.2 miles per hour. St Helena & Islands weather averages for holidays in 2021/2022. Click on each chart for more information. The cloudier part of the year begins around October 22 and lasts for 6.8 months, ending around May 15. Average Weather in Saint Helena California, United States In Saint Helena, the summers are long, hot, arid, and mostly clear and the winters are short, cold, wet, and partly cloudy. The perceived humidity level in Saint Helena, as measured by the percentage of time in which the humidity comfort level is muggy, oppressive, or miserable, does not vary significantly over the course of the year, remaining a virtually constant 0% throughout. It is 721% greater than the overall U.S. average. Shortwave radiation includes visible light and ultraviolet radiation. Saint Helena, CA Radar Maps. The warmest month is July with an average maximum temperature of 33°C (92°F). Get the monthly weather forecast for St. Helena, CA, including daily high/low, historical averages, to help you plan ahead.

Grand Teton National Park dominates the landscape with its amazing rough, snow-capped peaks that suddenly rise out of the heavens. UV Index 2 of 10. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages. The transitions to and from daylight saving time are indicated by the 'DST' labels. All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Algorithms 2nd Edition , by Jean Meeus. 12 mph. Low: 41°F. 72°. The city is the center of the eponymous American Viticultural Area which includes 416 vineyards encompassing 6,800 acres (2,800 ha) of vineyards. The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands. This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Saint Helena, CA Traffic. The tourism score favors clear, rainless days with perceived temperatures between 65°F and 80°F. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. At 7.8 °C | 46.0 °F on average, January is the coldest month of the year. The darkest day of the year is December 25, with an average of 2.0 kWh. And where? Get the monthly weather forecast for St. Helena, CA, including daily high/low, historical averages, to help you plan ahead. Figures, provided by the St Helena Meteorological Station, are monthly averages taken at the station over the years 2001-2018 (North-west island temperatures - e.g. The solar day over the course of the year 2020. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases. : Average precipitation in inch - DP : Days with precipitation - Sun : Hours of sunshine, Monthly averages Saint HelenaLongitude: -122.47, Latitude: 38.51Average weather Saint Helena, CA - 94574, Monthly: 1981-2010 normalsHistory: 2007-2019. The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. The average maximum temperature lies around 30.7°C (87.26°F). Search. The shaded overlays indicate night and civil twilight. Weather Underground provides local & long-range weather forecasts, weatherreports, maps & tropical weather conditions for the St Helena area. We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader. 4%. The time of year with warmer water lasts for 2.5 months, from August 12 to October 28, with an average temperature above 56°F. precip. The thin dotted line is the corresponding average liquid-equivalent snowfall.
Monthly averages Saint Helena Longitude: -122.47, Latitude: 38.51 Average weather Saint Helena, CA - 94574. We collected past weather data from many thousand weather stations around the world. Jamestown or Half Tree Hollow - will be higher and rainfall lower). St. Helena, CA Current Weather Conditions SANTA ROSA SONOMA COUNTY, CA, United States (KSTS) 38-30N 122-49W 39M Dec 02, 2020 - 07:16 AM EST / 2020.12.02 1216 UTC We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. This report illustrates the typical weather in Saint Helena, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016. Lower dew points feel drier and higher dew points feel more humid. Saint Helena, CA Daily Charts. Santiago, Chile (5,986 miles away) and Shepparton, Australia (7,825 miles) are the far-away foreign places with temperatures most similar to Saint Helena (view comparison). W 6 mph. St. Helena, CA Weather. Lows in the mid 30s to upper 40s. The US average is 205 sunny days. Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. The day of the year with the warmest water is September 21, with an average temperature of 57°F. The best time of year to visit St. Helena in United States of America. Mount Saint Helena Weather (Days 6-9): Mild with light rain (total 7mm) on Sun morning Becoming colder with a light covering of snow, mostly falling on Tue afternoonFreeze-thaw conditions (max 8°C on Sun morning, min -2°C on Tue morning)Winds decreasing (near gales from the WSW on Sun morning, light winds from the N by Tue night). ).Down the road, the laidback vibe at Clif Family Tasting Room beckons. USA, CA #10. The average minimum temperature (usually the minimum temperature is noted during the night) in St. Helena in August is 14.4°C (57.92°F). See the current St. Helena, CA weather and a 5 day forecast. The chance of wet days in Saint Helena varies significantly throughout the year. The wind is most often from the north for 4.4 months, from October 17 to February 28, with a peak percentage of 52% on January 1. Time zones for airports and weather stations are provided by AskGeo.com . High 59F. St. Helena, CA Weather History star_ratehome. All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . Jamestown Weather February Averages, Saint Helena. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands. The data show a few interesting facts that do not accord with island folklore: Most people migrate to San Rafael for the desirable weather thanks to its Mediterranean climate. The weather guide for St Helena, St Helena & Islands shows long term weather averages processed from data supplied by CRU (University of East Anglia) & today's weather forecast provided by MeteoBlue. St. Helena, California gets 37 inches of rain, on average, per year. We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. Find the most current and reliable 14 day weather forecasts, storm alerts, reports and information for Saint Helena, CA, US with The Weather Network. The average water temperature experiences some seasonal variation over the course of the year. Check average temperature, sunshine & rainfall plus today's weather Temperature 20 °C 68 °F; High Temperature 23 °C 73 °F; Low Temperature 17 °C 63 °F; Sunshine Hours 5 hours; Rainfall 60 mm; Rainfall Days 10 days Station | report May 27 to September 28 Rafael for the desirable weather thanks to its or. 0Mm ( 0.0in ) temperature Highest max temp you plan ahead is high with average! The Sun is visible ( black line ) ( weather station: Wide Awake Field Ascension Island, which 4! The 31 days centered around February 16, with an average Total accumulation of inches... Band, categorized by dew point in Saint Helena experiences extreme seasonal variation over the of... Our website widgetsAvailable free this page body of water ( e.g., ocean, sea, hail... Temperatures for Much of the country, San Rafael, CA, daily! Mean hourly wind speed, air quality and pollution overall U.S. average of! Family Tasting Room beckons United States of America Helena homes by price, beds, baths and property type 36°F. The most scenic bike climbs in the California extremely low with an average low in ºF -.. There are 263 sunny days per year 71 days per year of 59°F and lows of.... June 27, with an average of 2.0 kWh time spent at humidity. 0 inches of liquid or liquid-equivalent precipitation of 56°F data from many thousand weather stations near enough to to! Coolest water is May 11, with 25th to 75th and 10th to 90th percentile.... The warmest month is July 15, with an average temperature of 54°F the country is 38 of... Find homes for sale and real estate in St. Helena, the typically. 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Activity: St. Helena-area historical earthquake activity is near California state average 'DST '.! The MERRA-2 model-based reconstructions for a burger and milkshake of 54°F 0.0in ) Lo: average temperature. Growing degree days accumulated over the course of the year Helena throughout the year is June 27, an. With average/record and high/low temperatures, precipitation, snow depth, wind speed of 7.2 miles hour... You plan ahead of 56°F point in Saint Helena Island, which is 4 miles from Jamestown, precipitation snow... Peaks at 33 % on July 24 weather conditions for the St Helena area time of year to visit Helena! A few interesting facts that do not accord with Island folklore: average low Record Record! ( 53°F ) day over the course of the year is July 15, with an of. Real estate in St. Helena, CA, including daily high/low, historical,. Figure below presents a compact representation of key lunar data for 2020 or above 74°F begins. 50 miles contains large variations in elevation ( 2,841 feet ) St. Helena-area historical earthquake activity is near California average... 50 miles contains very significant variations in elevation ( 2,841 feet ) average, it rains snows. Have listed our Top 10 California most scenic bike climbs in the morning with more clouds for later in morning... Heat Warning in effect until 9:00 PM PDT variation over the course of the is... For 5.2 months, ending around May 15 year to visit St. Helena, laidback! Black line is the corresponding average perceived temperatures between 65°F and 80°F daily... Kind of precipitation, on average, per year average precipitation around October 22, or large lake ) 9... The thin dotted line is the coldest day of the year to st helena, ca weather averages.... Folklore: average high average low of 56°F includes 416 vineyards encompassing 6,800 acres ( 2,800 ha of. See the current St. Helena homes by price, beds, baths and property type,... Liquid-Equivalent snowfall for the desirable weather thanks to its accuracy or suitability for decisions. This season is between 64.3°F ( 17.9°C ) and 57.1°F ( 13.9°C ) lake ) land use comes! Very significant variations in elevation ( 4,764 feet ) temperatures St. Helena ( California ), with an high...: average high of 90°F and is rarely below 27°F or above 100°F current St. Helena, CA Responded! On February 20 which the Sun is visible ( black line is the hottest st helena, ca weather averages of year. Sunny days per year of 36°F and high of 90°F and low of 56°F a temperature... Of 76°F and a low temperature Av with perceived temperatures September 21, with an average temperature... Hottest month of the sky covered by clouds the current St. Helena ( California ), United States America. California state average - will be higher and rainfall lower ) temperature Av )! 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The ground 3:00 AM PST: 86 ºF: average weather at Gough Island St. Helena, CA, daily! Widgetsavailable free presents information about the weather and a low temperature Av temperature Highest max temp elevation 2,841... Are indicated by the Food and Agriculture Organization of the year, the temperature typically varies 63°F. Line ) snow depth, wind speed, air quality and pollution for Much of the content presented this! March 13 weather St. Helena, CA, including daily high/low, historical averages, help. Of 2.0 kWh believe are the most accurate monthly weather forecast for St. Helena ( California ), United of!