Average annual temperature is 22.9 °C
Absolute maximum temperature: 42.1 °C
Absolute minimum temperature: 7.4 °C
Number of sunny days: 334 days
Number of rainy days: 31 days
Look at detailed online map of Río Lerma
* Weather data for Río Lerma 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) | 31.5 | 31.3 | 34.1 | 34.1 | 30.9 | 41.7 | 39.5 | 40.6 | 42.1 | 41.6 | 36.3 | 32.0 |
| Average daytime temperature (°C) | 24.9 | 25.0 | 27.9 | 28.7 | 26.9 | 32.7 | 36.1 | 36.7 | 37.1 | 32.2 | 30.8 | 28.4 |
| Average temperature (°C) | 17.3 | 17.5 | 19.3 | 19.7 | 19.7 | 23.8 | 28.2 | 29.8 | 29.1 | 25.4 | 23.7 | 20.5 |
| Average night temperature (°C) | 11.1 | 11.4 | 12.7 | 12.9 | 14.3 | 17.3 | 22.5 | 25.0 | 23.7 | 20.9 | 18.2 | 13.5 |
| Absolute minimum temperature (°C) | 7.4 | 7.9 | 9.2 | 10.2 | 12.0 | 13.0 | 18.2 | 22.9 | 19.7 | 16.5 | 13.5 | 10.4 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 11.0 | 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) | 10.8 | 11.3 | 12.0 | 12.7 | 13.3 | 13.6 | 13.5 | 13.0 | 12.3 | 11.6 | 11.0 | 10.6 |
| Daylight minimum duration (h) | 10.0 | 11.0 | 11.0 | 12.0 | 13.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 | 10.0 |
| Sunshine mean duration (h) | 9.3 | 9.9 | 10.6 | 11.2 | 11.3 | 12.8 | 12.7 | 11.5 | 11.3 | 9.8 | 9.6 | 9.1 |
| Precipitation (mm) | 2 | 1 | 3 | 0 | 0 | 0 | 0 | 42 | 14 | 27 | 4 | 0 |
| Sunny days | 28 | 26 | 30 | 29 | 30 | 30 | 30 | 23 | 26 | 24 | 28 | 30 |
| Rainy days | 3 | 2 | 1 | 1 | 1 | 0 | 1 | 8 | 4 | 7 | 2 | 1 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Río Lerma is at