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In Napa, the summers are long, warm, arid, and mostly clear and the winters are short, cold, wet, and partly cloudy. Over the course of the year, the temperature typically varies from 39°F to 83°F and is rarely below 30°F or above 92°F.
In Napa, the climate is warm and temperate. The winters are rainier than the summers in Napa. The climate here is classified as Csc by the Köppen-Geiger. The temperature in this location is approximately 15.0 °C | 59.0 °F, as determined by statistical analysis.
Napa has a Mediterranean climate similar to many other parts of Northern California. Winters are cool and damp and summers are warm and dry. During the summer months rain is rare. Occasionally there may be a day or two of light rain in June and September.
Thanks to a mild, Mediterranean climate, Napa Valley is not only an idyllic place to grow grapes, it’s also a welcoming destination for visitors any time of year. Though temperate year-round, summers tend to be warm and dry with plenty of sun, while winters can bring rain and cooler, cloudy days.
Napa weather averages and climate Napa, California. Monthly temperature, precipitation and hours of sunshine. A climate graph showing rainfall, temperatures and normals.
Plan your visit with detailed insights on the climate in Napa (CA) by month. Get accurate forecasts for Napa temperature & weather by month, days, & hours.
Napa Valley experiences a Mediterranean climate, characterized by warm, dry summers, and cool, wet winters. This climate creates the perfect conditions for vineyards to thrive. Summers are typically long, with temperatures comfortably warm, making it ideal for grape growing and wine production as well as tourism.
