Average annual temperature is 10.0 °C
Absolute maximum temperature: 37.9 °C
Absolute minimum temperature: -23.6 °C
Number of sunny days: 215 days
Number of rainy days: 119 days
Number of snow days: 31 days
Look at detailed online map of Rock Valley
* Weather data for Rock Valley 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) | 2.6 | 6.4 | 14.7 | 28.3 | 30.9 | 32.3 | 36.4 | 37.9 | 35.5 | 31.7 | 18.5 | 11.7 |
| Average daytime temperature (°C) | -4.3 | -1.0 | 4.8 | 15.4 | 24.8 | 28.9 | 28.5 | 29.6 | 27.0 | 16.5 | 10.1 | 5.4 |
| Average temperature (°C) | -7.2 | -6.3 | -1.3 | 8.7 | 18.2 | 23.1 | 22.7 | 23.7 | 21.1 | 11.5 | 4.5 | 0.7 |
| Average night temperature (°C) | -10.2 | -10.8 | -5.4 | 3.5 | 12.3 | 17.5 | 17.3 | 18.7 | 16.1 | 7.5 | 0.1 | -2.6 |
| Absolute minimum temperature (°C) | -23.6 | -22.9 | -14.3 | -5.5 | 1.4 | 9.3 | 10.9 | 11.7 | 9.8 | -6.3 | -9.0 | -7.5 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.4 | 10.5 | 11.9 | 13.4 | 14.7 | 15.3 | 15.0 | 13.9 | 12.5 | 11.0 | 9.7 | 9.0 |
| Daylight minimum duration (h) | 9.0 | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 8.0 |
| Sunshine mean duration (h) | 3.9 | 6.8 | 6.9 | 9.2 | 12.0 | 13.0 | 12.4 | 11.5 | 10.0 | 7.5 | 7.0 | 5.4 |
| Precipitation (mm) | 55 | 39 | 54 | 57 | 90 | 57 | 38 | 72 | 14 | 130 | 1 | 52 |
| Sunny days | 20 | 19 | 15 | 18 | 16 | 15 | 13 | 21 | 15 | 14 | 25 | 24 |
| Rainy days | 4 | 4 | 6 | 9 | 15 | 15 | 18 | 10 | 15 | 15 | 3 | 5 |
| Snow days | 7 | 5 | 10 | 3 | 0 | 0 | 0 | 0 | 0 | 2 | 2 | 2 |
The best time to visit Rock Valley during the most sunny months:
Months with the longest average daylight duration in Rock Valley:
The largest precipitation sum in Rock Valley is at