Average annual temperature is 17.5 °C
Absolute maximum temperature: 34.6 °C
Absolute minimum temperature: 0.1 °C
Number of sunny days: 264 days
Number of rainy days: 101 days
Look at detailed online map of Unión San Antonio
* Weather data for Unión San Antonio 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) | 24.3 | 27.1 | 29.3 | 31.0 | 30.5 | 34.6 | 29.6 | 31.6 | 31.0 | 28.5 | 26.8 | 20.2 |
| Average daytime temperature (°C) | 21.4 | 23.6 | 26.9 | 27.3 | 28.2 | 31.8 | 27.5 | 27.1 | 27.4 | 23.9 | 21.8 | 17.3 |
| Average temperature (°C) | 12.6 | 14.6 | 18.0 | 19.2 | 20.3 | 23.5 | 20.1 | 19.9 | 20.1 | 16.9 | 13.7 | 10.6 |
| Average night temperature (°C) | 4.8 | 6.5 | 9.0 | 11.3 | 12.8 | 14.8 | 13.4 | 13.6 | 12.8 | 11.2 | 7.5 | 5.4 |
| Absolute minimum temperature (°C) | 0.1 | 1.2 | 2.8 | 7.8 | 10.1 | 12.2 | 10.2 | 10.5 | 11.2 | 5.6 | 0.8 | 0.1 |
| 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) | 10.9 | 11.4 | 12.0 | 12.7 | 13.2 | 13.5 | 13.4 | 12.9 | 12.3 | 11.6 | 11.1 | 10.8 |
| 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) | 9.8 | 10.4 | 11.1 | 11.3 | 11.9 | 12.3 | 11.8 | 11.5 | 11.4 | 9.4 | 9.1 | 7.2 |
| Precipitation (mm) | 2 | 0 | 0 | 7 | 24 | 3 | 62 | 40 | 6 | 65 | 54 | 24 |
| Sunny days | 30 | 27 | 28 | 24 | 21 | 26 | 16 | 11 | 24 | 18 | 19 | 20 |
| Rainy days | 1 | 1 | 3 | 6 | 10 | 4 | 15 | 20 | 6 | 13 | 11 | 11 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Unión San Antonio is at