Average annual temperature is 12.6 °C
Absolute maximum temperature: 21.6 °C
Absolute minimum temperature: 2.7 °C
Number of sunny days: 43 days
Number of rainy days: 322 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) | 17.9 | 19.5 | 20.2 | 21.4 | 21.6 | 21.2 | 19.8 | 19.6 | 19.7 | 19.6 | 18.9 | 19.0 |
| Average daytime temperature (°C) | 16.6 | 17.6 | 18.3 | 19.2 | 19.2 | 19.0 | 18.0 | 18.1 | 18.2 | 17.8 | 17.8 | 16.9 |
| Average temperature (°C) | 10.4 | 11.1 | 12.2 | 13.6 | 13.8 | 14.3 | 13.3 | 13.3 | 13.0 | 13.1 | 12.7 | 10.9 |
| Average night temperature (°C) | 5.0 | 5.8 | 6.7 | 8.1 | 9.0 | 10.0 | 9.6 | 9.5 | 8.9 | 9.4 | 9.0 | 6.3 |
| Absolute minimum temperature (°C) | 3.5 | 3.5 | 4.9 | 6.2 | 7.0 | 7.8 | 7.8 | 8.3 | 7.7 | 6.2 | 7.1 | 2.7 |
| 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) | 11.3 | 11.6 | 12.0 | 12.5 | 12.9 | 13.1 | 13.0 | 12.7 | 12.2 | 11.8 | 11.4 | 11.2 |
| 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) | 10.5 | 10.8 | 11.0 | 11.5 | 11.3 | 11.1 | 10.4 | 10.5 | 10.5 | 10.0 | 9.8 | 9.9 |
| Precipitation (mm) | 20 | 19 | 65 | 100 | 187 | 212 | 288 | 324 | 258 | 161 | 48 | 8 |
| Sunny days | 9 | 9 | 2 | 2 | 0 | 0 | 0 | 0 | 1 | 1 | 4 | 15 |
| Rainy days | 22 | 19 | 29 | 28 | 31 | 30 | 31 | 31 | 29 | 30 | 26 | 16 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Río Grande is at