St Helena Weather Forecasts. At an average temperature of 21.7 °C | 71.1 °F, July is the hottest month of the year. Be prepared with the most accurate 10-day forecast for St. Helena, CA with highs, lows, chance of precipitation from The Weather Channel and Weather.com Find the most current and reliable 36 hour weather forecasts, storm alerts, reports and information for Saint Helena, CA, US with The Weather Network. Weather conditions with updates on temperature, humidity, wind speed, snow, pressure, etc. View the latest weather forecasts, maps, news and alerts on Yahoo Weather. Want to know what the weather is now? St. Helena Weather - St. Helena, Napa Valley Forecast - Tripadvisor. Current conditions at Santa Rosa, Santa Rosa Sonoma County Airport (KSTS) Lat: 38.5°NLon: 122.81667°WElev: 125ft. Located just three miles from the historic Sonoma Plaza, Skypark serves as a convenient aviation gateway to the beautiful Sonoma Valley. Statewide IPM Program, Agriculture and Natural Resources, University of California Weather overview for Saint Helena (Baltimore County, Maryland, United States): detailed weather forecasts, 14 days trend, current rain/snow radar, storm tracking, current observations, satellite images, model charts and much more. Sonoma Skypark Airport is a public use airport owned by over fifty members of the local community. Get the forecast for today, tonight & tomorrow's weather for St. Helena, CA. 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. Saint Helena Weather by month // weather averages Napa County Weather Stations. At 7.8 °C | 46.0 °F on average, January is the coldest month of the year. Saint Helena, CA - Weather forecast from Theweather.com. Saint Helena 5-Day Forecast Saint Helena 5 day forecast with weather outlook providing day and night summary including precipitation, high and low temperatures presented in Fahrenheit and Celsius, sky conditions, rain chance, sunrise, sunset, wind chill, and wind speed with direction. Find the most current and reliable 14 day weather forecasts, storm alerts, reports and information for Saint Helena, CA, US with The Weather Network. Find local weather forecasts for St. Helena, United States throughout the world Legend Networks and Stations Map ... Saint Helena. Hi/Low, RealFeel®, precip, radar, & everything you need to be ready for the day, commute, and weekend! 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 . Weather Underground provides local & long-range weather forecasts, weatherreports, maps & tropical weather conditions for the St Helena area. 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). Napa's Kenzo Estate winery wins approval for underground expansion Updated Dec 4, 2020 Kenzo Estate winery on Mount George will add production space ⦠View: map with stations map only Click on a station name or pinhead for more information. Check out our current live radar and weather forecasts for Saint Helena, California to help plan your day Saint Helena average temperature. Helena area, radar, & everything you need to be ready for St! Speed, snow, pressure, etc, CA - weather Forecast from.. 21.7 °C | 46.0 °F on average, January is the coldest month of the,! An average temperature of 21.7 °C | 46.0 °F on average, January is the hottest month the. 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