Average annual temperature is 14.2 °C
Absolute maximum temperature: 38.1 °C
Absolute minimum temperature: -1.4 °C
Number of sunny days: 258
Number of rainy days: 107
Number of snow days:
Average annual precipitation: 1027 mm
Look at detailed online map of Napa
* Weather data for Napa United States is based on climate observations for 2023 year
| Jan | Feb | Mar | Apr | Maggio | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 19.4 | 21.6 | 18.9 | 28.9 | 29.5 | 32.6 | 38.1 | 37.3 | 31.4 | 34.6 | 25.8 | 20 |
| Average daytime temperature (°C) | 14.4 | 14.4 | 14.2 | 20.1 | 21.7 | 24.9 | 31.6 | 31.6 | 26.8 | 26.2 | 19.4 | 16 |
| Average temperature (°C) | 9.1 | 7.6 | 8.7 | 12.5 | 14.5 | 16.9 | 20.4 | 21.3 | 18.4 | 17.4 | 12.4 | 10.2 |
| Average night temperature (°C) | 5.5 | 2.8 | 4.4 | 6.6 | 9.6 | 11.5 | 12.9 | 14.7 | 13.1 | 11.1 | 7.2 | 6.4 |
| Absolute minimum temperature (°C) | -0.6 | -0.6 | -1.4 | 1.2 | 5.4 | 8.4 | 10 | 11.3 | 10.3 | 4.3 | 1.5 | 0.9 |
| Jan | Feb | Mar | Apr | Maggio | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.3 | 11.3 | 12.6 | 13.8 | 14.6 | 14.8 | 14.8 | 14.1 | 13 | 11.8 | 10.6 | 9.7 |
| Daylight mean duration (h) | 9.9 | 10.8 | 12 | 13.2 | 14.3 | 14.8 | 14.5 | 13.6 | 12.4 | 11.2 | 10.1 | 9.6 |
| Daylight minimum duration (h) | 9.6 | 10.3 | 11.3 | 12.6 | 13.8 | 14.7 | 14.2 | 13.1 | 11.9 | 10.6 | 9.7 | 9.5 |
| Sunshine mean duration (h) | 6.1 | 8 | 7.5 | 11.6 | 11.2 | 12.3 | 12.9 | 11.9 | 10.4 | 9.2 | 7.9 | 5.9 |
| Precipitation (mm) | 359 | 88 | 306 | 10 | 21 | 4 | 1 | 2 | 6 | 20 | 56 | 154 |
| Sunny days | 11 | 16 | 10 | 26 | 23 | 28 | 30 | 28 | 24 | 25 | 21 | 16 |
| Rainy days | 20 | 12 | 21 | 4 | 8 | 2 | 1 | 3 | 6 | 6 | 9 | 15 |
The best time to visit Napa during the most sunny months:
The largest precipitation sum in Napa is at