Average annual temperature is 22.2 °C
Absolute maximum temperature: 36.3 °C
Absolute minimum temperature: 10.9 °C
Number of sunny days: 214 days
Number of rainy days: 151 days
Look at detailed online map of San Juan Unión
* Weather data for San Juan Unión 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) | 28.4 | 32.3 | 33.2 | 35.2 | 34.9 | 36.3 | 31.3 | 29.2 | 29.3 | 29.4 | 28.5 | 26.5 |
| Average daytime temperature (°C) | 26.4 | 28.4 | 30.8 | 32.3 | 31.5 | 32.1 | 28.0 | 27.2 | 27.5 | 26.4 | 26.5 | 24.8 |
| Average temperature (°C) | 19.7 | 21.1 | 23.1 | 24.4 | 24.5 | 25.1 | 22.7 | 22.1 | 22.4 | 21.4 | 21.1 | 19.3 |
| Average night temperature (°C) | 13.9 | 14.7 | 16.1 | 17.3 | 18.5 | 19.2 | 18.1 | 17.9 | 18.1 | 17.6 | 16.6 | 14.9 |
| Absolute minimum temperature (°C) | 11.9 | 12.6 | 13.7 | 15.6 | 16.6 | 17.3 | 16.8 | 16.7 | 17.0 | 15.5 | 14.0 | 10.9 |
| 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 | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 |
| Daylight mean duration (h) | 11.2 | 11.5 | 12.0 | 12.6 | 13.0 | 13.2 | 13.1 | 12.7 | 12.2 | 11.7 | 11.3 | 11.0 |
| Daylight minimum duration (h) | 11.0 | 11.0 | 11.0 | 12.0 | 12.0 | 13.0 | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 | 11.0 |
| Sunshine mean duration (h) | 10.3 | 10.7 | 11.3 | 11.5 | 11.5 | 12.1 | 11.5 | 10.9 | 11.1 | 9.9 | 10.1 | 9.6 |
| Precipitation (mm) | 0 | 0 | 1 | 10 | 60 | 45 | 143 | 110 | 54 | 115 | 33 | 4 |
| Sunny days | 31 | 28 | 29 | 24 | 12 | 17 | 7 | 6 | 5 | 5 | 24 | 26 |
| Rainy days | 0 | 0 | 2 | 6 | 19 | 13 | 24 | 25 | 25 | 26 | 6 | 5 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in San Juan Unión is at