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The hottest month of the year in Napa is July, with an average high of 82°F and low of 56°F. The cool season lasts for 2.4 months, from November 28 to February 10, with an average daily high temperature below 60°F. The coldest month of the year in Napa is January, with an average low of 40°F and high of 56°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 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.
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).
Compare Napa weather averages by month. Get detailed monthly climate statistics to help you plan your perfect trip for Napa, California.
Detailed temperature information for Napa, California with data for average monthly highs and lows plus number of days with hot or cold weather.
