Average annual temperature is 20.2 °C
Absolute maximum temperature: 37.7 °C
Absolute minimum temperature: 4.6 °C
Number of sunny days: 241 days
Number of rainy days: 124 days
Look at detailed online map of Refugio de San Guillermo
* Weather data for Refugio de San Guillermo Mexico is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 26.9 | 31.4 | 33.2 | 33.9 | 35.6 | 37.7 | 33.2 | 31.6 | 34.2 | 32.3 | 31.3 | 25.5 |
| Average daytime temperature (°C) | 24.8 | 26.9 | 30.2 | 31.5 | 31.9 | 35.0 | 30.2 | 29.2 | 30.4 | 28.4 | 27.0 | 22.5 |
| Average temperature (°C) | 15.5 | 17.3 | 20.6 | 22.4 | 22.9 | 25.8 | 22.0 | 21.3 | 22.0 | 20.2 | 18.0 | 14.7 |
| Average night temperature (°C) | 7.4 | 9.1 | 11.9 | 14.2 | 14.7 | 16.8 | 15.5 | 15.3 | 15.0 | 14.3 | 10.9 | 9.0 |
| Absolute minimum temperature (°C) | 4.7 | 4.8 | 5.5 | 11.2 | 11.9 | 15.1 | 12.6 | 13.4 | 13.4 | 9.4 | 6.2 | 4.6 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 11.0 | 11.0 | 12.0 | 12.0 | 13.0 | 13.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 |
| Daylight mean duration (h) | 11.0 | 11.5 | 12.0 | 12.6 | 13.1 | 13.4 | 13.2 | 12.8 | 12.3 | 11.7 | 11.2 | 10.9 |
| Daylight minimum duration (h) | 10.0 | 11.0 | 11.0 | 12.0 | 12.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 | 10.0 |
| Sunshine mean duration (h) | 10.1 | 10.6 | 11.1 | 11.5 | 11.7 | 12.3 | 11.9 | 10.6 | 11.3 | 9.5 | 9.9 | 7.9 |
| Precipitation (mm) | 0 | 0 | 6 | 0 | 10 | 15 | 81 | 65 | 49 | 75 | 47 | 36 |
| Sunny days | 29 | 28 | 24 | 27 | 21 | 26 | 9 | 8 | 21 | 13 | 20 | 15 |
| Rainy days | 2 | 0 | 7 | 3 | 10 | 4 | 22 | 23 | 9 | 18 | 10 | 16 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Refugio de San Guillermo is at