Average annual temperature is 16 °C
Absolute maximum temperature: 42.2 °C
Absolute minimum temperature: -9.1 °C
Number of sunny days: 267
Number of rainy days: 91
Number of snow days: 7
Average annual precipitation: 274 mm
Look at detailed online map of Santa Rosa
* Weather data for Santa Rosa United States is based on climate observations for 2023 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 19.4 | 19.8 | 23.8 | 30.5 | 32.3 | 39.2 | 42.2 | 41 | 37.8 | 31.3 | 26.9 | 19.7 |
| Average daytime temperature (°C) | 11.4 | 13.7 | 17.5 | 23.6 | 27.6 | 32.3 | 37.5 | 35.4 | 31.1 | 24.2 | 17.7 | 11.9 |
| Average temperature (°C) | 4.8 | 5.5 | 10 | 14.7 | 19.6 | 24.6 | 29.7 | 28.1 | 23.8 | 16.1 | 9.6 | 5.2 |
| Average night temperature (°C) | -0.4 | -0.1 | 3.4 | 6.9 | 12.6 | 16.7 | 21.6 | 21.2 | 16.8 | 9.2 | 3.7 | 0.2 |
| Absolute minimum temperature (°C) | -7.9 | -9.1 | -4.7 | -1.3 | 8.5 | 10.7 | 16 | 16.7 | 12.7 | -4.4 | -4.8 | -5.2 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.5 | 11.4 | 12.5 | 13.6 | 14.3 | 14.5 | 14.5 | 13.9 | 12.9 | 11.8 | 10.8 | 10 |
| Daylight mean duration (h) | 10.1 | 10.9 | 12 | 13.1 | 14 | 14.5 | 14.3 | 13.5 | 12.4 | 11.3 | 10.4 | 9.9 |
| Daylight minimum duration (h) | 9.9 | 10.5 | 11.4 | 12.6 | 13.6 | 14.4 | 13.9 | 13 | 11.9 | 10.8 | 10 | 9.8 |
| Sunshine mean duration (h) | 8 | 8.8 | 9.8 | 11.7 | 11.5 | 12.5 | 12.4 | 11.8 | 10.8 | 10.1 | 8.4 | 8.1 |
| Precipitation (mm) | 6 | 14 | 13 | 3 | 93 | 20 | 13 | 4 | 16 | 12 | 8 | 71 |
| Sunny days | 26 | 18 | 23 | 27 | 12 | 20 | 24 | 21 | 21 | 26 | 24 | 25 |
| Rainy days | 2 | 8 | 7 | 3 | 19 | 10 | 7 | 10 | 9 | 5 | 6 | 5 |
| Snow days | 3 | 2 | 1 | 1 |
The largest precipitation sum in Santa Rosa is at