Average annual temperature is 9.4 °C
Absolute maximum temperature: 35.9 °C
Absolute minimum temperature: -22.5 °C
Number of sunny days: 223 days
Number of rainy days: 118 days
Number of snow days: 24 days
Look at detailed online map of San Geronimo
* Weather data for San Geronimo 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) | 14.0 | 13.9 | 15.7 | 23.7 | 24.9 | 31.3 | 35.9 | 31.9 | 30.3 | 25.9 | 20.8 | 16.2 |
| Average daytime temperature (°C) | 5.6 | 7.4 | 9.6 | 17.2 | 21.2 | 24.9 | 31.0 | 28.1 | 24.8 | 19.3 | 12.7 | 6.8 |
| Average temperature (°C) | -0.9 | -0.5 | 2.9 | 8.4 | 13.3 | 16.9 | 22.0 | 20.1 | 16.5 | 10.4 | 4.4 | -0.8 |
| Average night temperature (°C) | -6.4 | -6.4 | -2.7 | 0.4 | 5.8 | 8.6 | 13.3 | 12.6 | 8.7 | 3.1 | -1.8 | -6.3 |
| Absolute minimum temperature (°C) | -19.0 | -22.5 | -13.8 | -6.1 | 1.2 | 2.6 | 9.0 | 9.2 | 3.3 | -6.8 | -8.8 | -16.0 |
| 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 | 13.0 | 12.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 10.1 | 10.9 | 12.0 | 13.1 | 14.0 | 14.5 | 14.3 | 13.5 | 12.4 | 11.3 | 10.3 | 9.8 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 8.0 | 8.9 | 10.0 | 11.8 | 11.2 | 12.5 | 12.8 | 11.6 | 11.1 | 9.9 | 8.3 | 7.9 |
| Precipitation (mm) | 21 | 29 | 37 | 4 | 87 | 40 | 25 | 40 | 19 | 7 | 10 | 38 |
| Sunny days | 21 | 17 | 17 | 22 | 10 | 16 | 15 | 10 | 19 | 26 | 25 | 25 |
| Rainy days | 3 | 4 | 8 | 7 | 21 | 14 | 16 | 21 | 11 | 5 | 4 | 4 |
| Snow days | 7 | 7 | 6 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 |
The largest precipitation sum in San Geronimo is at