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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. Precipitation here is about 594 mm | 23.4 inch per year.
Temperatures, hours of sunshine and precipitation. The yearly temperature in Napa Valley ranges significantly, from cool winters averaging around 9°C (48°F) to warm summers with average highs around 21°C (70°F).
Climate Averages, Frost Dates, Hardiness Zones and Drought Conditions for Napa California
Napa weather averages and climate Napa, California. Monthly temperature, precipitation and hours of sunshine. A climate graph showing rainfall, temperatures and normals.
Climate Graph Napa and averages California. A Climate Chart and information about the temperature and precipitation
See historical weather data for Napa. Climate charts Hourly simulations High resolution
