Average temperature in Napa (CA)
The mean minimum and maximum temperatures over the year in Napa (California), the United States of America.
- Hot season / summer is in June, July, August and September.
- On average, the warmest month is September with 30°C.
- On average, the coolest month is December with 14°C.
- The average annual maximum temperature is 23°C.
- The average annual minimum temperature is 8°C.
Weather Forecasts for Napa (CA)
clear and no rain
almost clear and no rain
clear and no rain