Average annual temperature is 11.1 °C
Absolute maximum temperature: 37.2 °C
Absolute minimum temperature: -20.6 °C
Number of sunny days: 180 days
Number of rainy days: 171 days
Number of snow days: 14 days
Look at detailed online map of River Grove
* Weather data for River Grove United States is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 11.5 | 15.2 | 21.2 | 26.8 | 32.8 | 33.2 | 33.4 | 37.2 | 34.5 | 28.4 | 20.1 | 14.7 |
| Average daytime temperature (°C) | 3.4 | 5.8 | 7.6 | 16.6 | 21.1 | 26.4 | 27.6 | 26.7 | 23.7 | 17.0 | 9.9 | 6.6 |
| Average temperature (°C) | -0.4 | 0.4 | 2.7 | 9.9 | 14.8 | 20.0 | 22.4 | 22.0 | 19.2 | 12.7 | 5.1 | 3.3 |
| Average night temperature (°C) | -3.3 | -3.6 | -0.8 | 4.4 | 9.6 | 14.9 | 18.0 | 18.1 | 15.4 | 9.2 | 1.3 | 0.9 |
| Absolute minimum temperature (°C) | -20.6 | -18.8 | -11.1 | -3.0 | 1.9 | 8.5 | 13.7 | 12.8 | 10.3 | -3.0 | -10.6 | -7.8 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 9.0 | 11.0 | 12.0 | 13.0 | 14.0 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.5 | 10.6 | 11.9 | 13.4 | 14.6 | 15.2 | 14.9 | 13.8 | 12.5 | 11.1 | 9.8 | 9.2 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 3.1 | 7.8 | 6.9 | 9.2 | 10.5 | 12.0 | 11.8 | 10.6 | 8.2 | 6.3 | 7.0 | 3.9 |
| Precipitation (mm) | 57 | 89 | 85 | 85 | 51 | 56 | 323 | 104 | 167 | 121 | 39 | 81 |
| Sunny days | 13 | 18 | 10 | 15 | 21 | 19 | 12 | 14 | 11 | 11 | 21 | 15 |
| Rainy days | 11 | 8 | 21 | 15 | 10 | 11 | 19 | 17 | 19 | 19 | 7 | 14 |
| Snow days | 7 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 | 2 |
The best time to visit River Grove during the most sunny months:
The largest precipitation sum in River Grove is at