Average annual temperature is 26.2 °C
Absolute maximum temperature: 37.6 °C
Absolute minimum temperature: 13.9 °C
Number of sunny days: 106 days
Number of rainy days: 259 days
Look at detailed online map of Unión
* Weather data for 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) | 30.8 | 31.3 | 34.5 | 34.9 | 36.8 | 36.5 | 37.2 | 37.6 | 34.4 | 36.0 | 32.5 | 31.5 |
| Average daytime temperature (°C) | 28.5 | 29.3 | 30.7 | 32.6 | 33.6 | 33.9 | 34.7 | 34.1 | 33.2 | 31.8 | 29.8 | 27.9 |
| Average temperature (°C) | 23.7 | 24.1 | 25.3 | 26.3 | 27.2 | 28.0 | 29.0 | 28.4 | 27.3 | 26.9 | 25.2 | 23.5 |
| Average night temperature (°C) | 20.2 | 20.5 | 21.2 | 21.7 | 22.6 | 24.0 | 25.1 | 24.7 | 23.7 | 23.5 | 22.1 | 20.6 |
| Absolute minimum temperature (°C) | 13.9 | 14.9 | 18.4 | 18.5 | 19.0 | 21.3 | 23.1 | 22.4 | 21.9 | 19.2 | 20.0 | 15.4 |
| 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 | 11.4 | 12.0 | 12.6 | 13.1 | 13.4 | 13.3 | 12.8 | 12.3 | 11.7 | 11.1 | 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) | 9.5 | 10.2 | 10.6 | 11.4 | 11.5 | 11.7 | 11.5 | 10.4 | 10.8 | 10.6 | 9.6 | 8.8 |
| Precipitation (mm) | 44 | 34 | 48 | 36 | 107 | 81 | 96 | 225 | 141 | 57 | 88 | 74 |
| Sunny days | 13 | 10 | 17 | 14 | 7 | 8 | 6 | 3 | 1 | 9 | 8 | 10 |
| Rainy days | 18 | 18 | 14 | 16 | 24 | 22 | 25 | 28 | 29 | 22 | 22 | 21 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Unión is at