Average annual temperature is 17.6 °C
Absolute maximum temperature: 29.6 °C
Absolute minimum temperature: 5.4 °C
Number of sunny days: 56 days
Number of rainy days: 309 days
Look at detailed online map of Río Grande
* Weather data for Río Grande 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) | 24.9 | 26.1 | 28.9 | 29.6 | 27.1 | 27.5 | 23.8 | 26.4 | 23.7 | 27.5 | 27.1 | 24.8 |
| Average daytime temperature (°C) | 20.3 | 20.8 | 23.3 | 24.6 | 24.3 | 24.5 | 22.2 | 22.5 | 22.6 | 21.5 | 19.8 | 18.1 |
| Average temperature (°C) | 15.4 | 15.3 | 17.7 | 19.0 | 19.4 | 20.3 | 18.4 | 18.5 | 18.4 | 17.7 | 16.1 | 14.3 |
| Average night temperature (°C) | 11.3 | 11.2 | 13.2 | 14.5 | 15.5 | 16.9 | 15.6 | 15.7 | 15.2 | 15.1 | 13.6 | 11.5 |
| Absolute minimum temperature (°C) | 5.4 | 7.8 | 9.8 | 11.4 | 12.5 | 15.0 | 14.0 | 14.4 | 13.4 | 11.5 | 10.1 | 5.4 |
| 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 | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 |
| Daylight mean duration (h) | 11.2 | 11.6 | 12.0 | 12.5 | 12.9 | 13.1 | 13.0 | 12.7 | 12.2 | 11.8 | 11.3 | 11.1 |
| Daylight minimum duration (h) | 11.0 | 11.0 | 11.0 | 12.0 | 12.0 | 13.0 | 12.0 | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 |
| Sunshine mean duration (h) | 9.8 | 9.7 | 10.8 | 11.1 | 11.5 | 11.5 | 10.8 | 10.7 | 10.9 | 9.1 | 8.0 | 7.9 |
| Precipitation (mm) | 25 | 33 | 68 | 127 | 125 | 124 | 174 | 206 | 75 | 155 | 117 | 87 |
| Sunny days | 10 | 13 | 4 | 4 | 5 | 6 | 0 | 0 | 0 | 1 | 5 | 8 |
| Rainy days | 21 | 15 | 27 | 26 | 26 | 24 | 31 | 31 | 30 | 30 | 25 | 23 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Río Grande is at