Average annual temperature is 14.6 °C
Absolute maximum temperature: 34.7 °C
Absolute minimum temperature: -6.4 °C
Number of sunny days: 267 days
Number of rainy days: 97 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) | 19.6 | 21.9 | 23.4 | 26.0 | 28.9 | 33.1 | 34.7 | 33.5 | 30.8 | 27.7 | 24.3 | 19.5 |
| Average daytime temperature (°C) | 14.4 | 15.9 | 18.7 | 22.2 | 24.7 | 29.8 | 31.5 | 28.3 | 28.3 | 23.1 | 17.7 | 15.1 |
| Average temperature (°C) | 6.1 | 7.1 | 10.3 | 13.7 | 16.6 | 21.9 | 24.0 | 21.0 | 20.6 | 15.6 | 10.6 | 6.7 |
| Average night temperature (°C) | -0.5 | 0.4 | 3.4 | 5.4 | 9.2 | 13.5 | 16.1 | 14.4 | 13.3 | 9.1 | 5.2 | -0.1 |
| Absolute minimum temperature (°C) | -6.0 | -6.4 | -4.5 | 0.9 | 5.2 | 7.3 | 12.9 | 11.8 | 11.3 | 1.5 | -2.6 | -5.2 |
| 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) | 10.5 | 11.2 | 12.0 | 12.9 | 13.6 | 13.9 | 13.8 | 13.2 | 12.3 | 11.5 | 10.7 | 10.3 |
| 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 | 10.0 | 11.8 | 11.7 | 12.4 | 12.7 | 12.0 | 11.2 | 9.6 | 8.9 | 9.0 |
| Precipitation (mm) | 1 | 6 | 39 | 1 | 37 | 6 | 14 | 25 | 16 | 6 | 17 | 1 |
| Sunny days | 28 | 24 | 25 | 27 | 17 | 22 | 24 | 12 | 14 | 24 | 23 | 27 |
| Rainy days | 2 | 4 | 6 | 3 | 14 | 8 | 7 | 19 | 16 | 7 | 7 | 4 |
| Snow days | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in La Unión is at