Average annual temperature is 22.3 °C
Absolute maximum temperature: 34.7 °C
Absolute minimum temperature: 11.5 °C
Number of sunny days: 90 days
Number of rainy days: 275 days
Look at detailed online map of Río Negro
* Weather data for Río Negro 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) | 29.7 | 31.2 | 32.2 | 32.1 | 34.7 | 33.2 | 29.3 | 29.2 | 29.1 | 29.0 | 29.2 | 29.5 |
| Average daytime temperature (°C) | 27.9 | 29.3 | 29.9 | 30.7 | 31.7 | 29.1 | 27.7 | 27.4 | 27.2 | 26.6 | 26.9 | 26.6 |
| Average temperature (°C) | 20.9 | 21.9 | 22.5 | 23.3 | 24.4 | 23.4 | 22.2 | 22.2 | 22.0 | 21.6 | 21.7 | 20.8 |
| Average night temperature (°C) | 15.2 | 16.0 | 16.6 | 17.7 | 19.0 | 19.5 | 18.5 | 18.6 | 18.6 | 18.1 | 17.6 | 15.4 |
| Absolute minimum temperature (°C) | 13.3 | 12.6 | 13.8 | 15.6 | 16.5 | 17.6 | 16.5 | 17.1 | 17.5 | 15.5 | 14.5 | 11.5 |
| 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) | 10.4 | 10.7 | 11.0 | 11.3 | 11.1 | 10.3 | 9.6 | 9.3 | 9.9 | 9.2 | 9.8 | 9.9 |
| Precipitation (mm) | 2 | 8 | 18 | 36 | 98 | 233 | 344 | 363 | 266 | 369 | 130 | 14 |
| Sunny days | 19 | 15 | 15 | 14 | 6 | 0 | 0 | 0 | 0 | 0 | 4 | 17 |
| Rainy days | 12 | 13 | 16 | 16 | 25 | 30 | 31 | 31 | 30 | 31 | 26 | 14 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Río Negro is at