Average annual temperature is 12.4 °C
Absolute maximum temperature: 36.0 °C
Absolute minimum temperature: -21.1 °C
Number of sunny days: 213 days
Number of rainy days: 135 days
Number of snow days: 17 days
Look at detailed online map of Grand River
* Weather data for Grand River 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) | 11.1 | 15.5 | 21.5 | 28.3 | 31.1 | 32.8 | 35.4 | 36.0 | 33.6 | 32.3 | 19.9 | 15.1 |
| Average daytime temperature (°C) | 2.8 | 6.8 | 9.4 | 18.2 | 25.2 | 29.3 | 29.4 | 28.9 | 27.4 | 19.1 | 11.6 | 7.4 |
| Average temperature (°C) | -1.5 | 0.1 | 3.3 | 11.2 | 18.8 | 23.6 | 23.9 | 23.9 | 21.2 | 13.9 | 6.1 | 3.2 |
| Average night temperature (°C) | -4.6 | -4.7 | -1.1 | 5.5 | 12.6 | 17.9 | 19.2 | 19.7 | 15.9 | 9.5 | 1.7 | -0.2 |
| Absolute minimum temperature (°C) | -15.4 | -21.1 | -12.3 | -4.5 | 4.1 | 10.6 | 14.3 | 14.0 | 11.2 | -4.0 | -9.0 | -5.7 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 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) | 9.6 | 10.6 | 11.9 | 13.3 | 14.5 | 15.0 | 14.8 | 13.8 | 12.5 | 11.1 | 9.9 | 9.3 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 5.4 | 7.5 | 7.2 | 9.5 | 11.4 | 12.2 | 11.9 | 11.1 | 10.6 | 8.0 | 6.9 | 5.1 |
| Precipitation (mm) | 54 | 55 | 46 | 39 | 61 | 50 | 103 | 82 | 24 | 49 | 11 | 80 |
| Sunny days | 17 | 17 | 14 | 20 | 17 | 17 | 17 | 16 | 22 | 16 | 24 | 16 |
| Rainy days | 6 | 9 | 15 | 9 | 14 | 13 | 14 | 15 | 8 | 14 | 5 | 13 |
| Snow days | 8 | 2 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 2 |
The best time to visit Grand River during the most sunny months:
The largest precipitation sum in Grand River is at