WEATHER FORECAST
February 15, 2025


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Helena is a small unincorporated community in Napa County, California. The climate in Helena is Mediterranean, with hot and dry summers and mild, wet winters. Hydrology constituents in the area include the Napa River and several creeks, which provide water for irrigation and support a diverse range of wildlife. Outdoor recreation opportunities in the area include hiking, biking, and birdwatching in the nearby Robert Louis Stevenson State Park, which offers stunning views of the surrounding mountains and valleys. Visitors can also enjoy wine tasting at the local wineries, or explore the historic buildings and landmarks in downtown Helena.

       

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Weather Forecast

Helena receives approximately 1233mm of rain per year, with humidity levels near 61% and air temperatures averaging around 10°C. Helena has a plant hardyness factor of 8, meaning plants and agriculture in this region tend to thrive here all year round.

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