Average annual temperature is 13.6 °C
Absolute maximum temperature: 34.9 °C
Absolute minimum temperature: 1.9 °C
Number of sunny days: 260 days
Number of rainy days: 105 days
Look at detailed online map of San Quentin
* Weather data for San Quentin United States is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 16.2 | 17.6 | 17.1 | 24.6 | 26.4 | 24.3 | 34.1 | 34.9 | 29.0 | 33.8 | 25.0 | 18.4 |
| Average daytime temperature (°C) | 13.4 | 13.0 | 12.9 | 17.5 | 18.3 | 19.6 | 25.7 | 26.2 | 22.3 | 23.9 | 18.1 | 15.1 |
| Average temperature (°C) | 9.7 | 8.4 | 9.3 | 12.0 | 13.5 | 14.8 | 17.5 | 18.5 | 17.0 | 17.1 | 13.4 | 11.4 |
| Average night temperature (°C) | 6.9 | 4.9 | 6.5 | 7.8 | 10.4 | 11.6 | 12.4 | 14.0 | 13.5 | 12.7 | 9.9 | 8.8 |
| Absolute minimum temperature (°C) | 1.9 | 2.5 | 2.9 | 4.6 | 7.2 | 8.9 | 11.0 | 11.9 | 10.2 | 6.5 | 6.7 | 5.0 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.9 | 10.8 | 12.0 | 13.2 | 14.2 | 14.7 | 14.5 | 13.6 | 12.4 | 11.2 | 10.1 | 9.6 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 6.0 | 7.7 | 7.7 | 11.4 | 11.6 | 12.7 | 12.8 | 11.5 | 10.7 | 9.3 | 7.8 | 5.6 |
| Precipitation (mm) | 313 | 86 | 277 | 10 | 44 | 0 | 0 | 0 | 2 | 9 | 69 | 194 |
| Sunny days | 13 | 16 | 9 | 28 | 23 | 27 | 31 | 28 | 26 | 23 | 20 | 16 |
| Rainy days | 18 | 12 | 22 | 2 | 8 | 3 | 0 | 3 | 4 | 8 | 10 | 15 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit San Quentin during the most sunny months:
The largest precipitation sum in San Quentin is at