Average annual temperature is 19.9 °C
Absolute maximum temperature: 39.0 °C
Absolute minimum temperature: -3.2 °C
Number of sunny days: 310 days
Number of rainy days: 54 days
Number of snow days: 1 day
Look at detailed online map of Romerillo Viejo
* Weather data for Romerillo Viejo 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) | 26.4 | 28.0 | 29.0 | 31.5 | 34.1 | 38.0 | 38.0 | 39.0 | 36.0 | 33.5 | 28.3 | 24.6 |
| Average daytime temperature (°C) | 19.6 | 20.2 | 23.9 | 28.3 | 30.3 | 35.8 | 35.5 | 34.0 | 33.4 | 27.5 | 20.7 | 18.3 |
| Average temperature (°C) | 10.6 | 10.9 | 14.9 | 19.7 | 23.0 | 28.5 | 29.8 | 27.9 | 27.1 | 20.6 | 14.1 | 10.7 |
| Average night temperature (°C) | 3.8 | 4.1 | 7.8 | 11.9 | 15.5 | 20.7 | 23.5 | 21.8 | 20.3 | 14.7 | 9.1 | 4.3 |
| Absolute minimum temperature (°C) | -3.2 | -2.8 | 0.2 | 6.0 | 12.9 | 16.1 | 20.2 | 19.4 | 17.2 | 4.6 | 1.6 | -1.0 |
| 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 | 14.0 | 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) | 9.2 | 8.8 | 9.5 | 11.8 | 11.4 | 12.2 | 12.5 | 11.9 | 11.4 | 9.4 | 8.2 | 9.2 |
| Precipitation (mm) | 1 | 16 | 39 | 3 | 26 | 5 | 1 | 1 | 20 | 6 | 27 | 1 |
| Sunny days | 26 | 22 | 25 | 29 | 22 | 27 | 29 | 24 | 27 | 28 | 22 | 29 |
| Rainy days | 5 | 5 | 6 | 1 | 9 | 3 | 2 | 7 | 3 | 3 | 8 | 2 |
| Snow days | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Romerillo Viejo is at