Average annual temperature is 11.8 °C
Absolute maximum temperature: 29.0 °C
Absolute minimum temperature: -4.3 °C
Number of sunny days: 197 days
Number of rainy days: 167 days
Number of snow days: 1 day
Look at detailed online map of La Unión
* Weather data for La 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) | 18.0 | 18.6 | 21.4 | 23.9 | 27.3 | 28.7 | 27.6 | 29.0 | 26.7 | 24.4 | 22.3 | 18.6 |
| Average daytime temperature (°C) | 13.4 | 14.3 | 17.5 | 19.5 | 21.2 | 26.3 | 24.7 | 23.8 | 24.5 | 19.5 | 16.6 | 14.2 |
| Average temperature (°C) | 6.3 | 7.1 | 9.6 | 11.1 | 13.3 | 17.7 | 16.3 | 16.0 | 15.9 | 12.6 | 9.4 | 6.6 |
| Average night temperature (°C) | 1.2 | 2.0 | 3.4 | 3.9 | 6.0 | 10.0 | 9.7 | 10.1 | 8.7 | 7.5 | 4.3 | 0.6 |
| Absolute minimum temperature (°C) | -1.5 | -3.5 | -0.9 | -2.1 | 2.5 | 4.2 | 7.0 | 7.7 | 6.2 | 1.6 | -4.0 | -4.3 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 13.0 | 13.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 |
| Daylight mean duration (h) | 10.7 | 11.3 | 12.0 | 12.8 | 13.4 | 13.7 | 13.6 | 13.0 | 12.3 | 11.5 | 10.9 | 10.5 |
| Daylight minimum duration (h) | 10.0 | 10.0 | 11.0 | 12.0 | 13.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 | 10.0 |
| Sunshine mean duration (h) | 9.5 | 9.6 | 10.7 | 11.8 | 11.2 | 12.0 | 11.3 | 10.5 | 10.4 | 7.9 | 9.1 | 8.9 |
| Precipitation (mm) | 7 | 36 | 10 | 8 | 25 | 22 | 151 | 115 | 44 | 96 | 23 | 4 |
| Sunny days | 26 | 19 | 28 | 22 | 14 | 16 | 3 | 1 | 6 | 14 | 22 | 26 |
| Rainy days | 5 | 9 | 3 | 8 | 17 | 14 | 28 | 30 | 24 | 17 | 7 | 5 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 |
The largest precipitation sum in La Unión is at