Average annual temperature is 6.9 °C
Absolute maximum temperature: 36.7 °C
Absolute minimum temperature: -22.3 °C
Number of sunny days: 189 days
Number of rainy days: 106 days
Number of snow days: 70 days
Look at detailed online map of Roy Summit
* Weather data for Roy Summit 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) | 1.2 | 0.7 | 4.3 | 23.1 | 25.5 | 28.1 | 36.7 | 32.9 | 27.3 | 21.0 | 12.2 | 4.0 |
| Average daytime temperature (°C) | -3.7 | -4.1 | -0.6 | 7.3 | 19.0 | 22.3 | 32.1 | 27.7 | 22.1 | 14.5 | 4.9 | -0.5 |
| Average temperature (°C) | -6.0 | -7.3 | -3.9 | 2.4 | 12.9 | 16.1 | 24.9 | 20.9 | 15.9 | 8.6 | 0.8 | -3.5 |
| Average night temperature (°C) | -8.3 | -10.1 | -6.7 | -1.5 | 6.9 | 10.0 | 17.4 | 14.7 | 10.0 | 4.0 | -2.4 | -6.6 |
| Absolute minimum temperature (°C) | -22.3 | -19.8 | -13.3 | -9.9 | 0.0 | 4.4 | 11.6 | 9.3 | 1.1 | -6.8 | -13.5 | -16.5 |
| 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) | 9.5 | 10.6 | 11.9 | 13.4 | 14.6 | 15.2 | 14.9 | 13.9 | 12.5 | 11.1 | 9.8 | 9.1 |
| 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 | 9.0 |
| Sunshine mean duration (h) | 4.2 | 6.9 | 8.2 | 10.2 | 12.0 | 12.6 | 13.3 | 11.3 | 10.7 | 8.6 | 6.9 | 5.3 |
| Precipitation (mm) | 68 | 35 | 61 | 29 | 64 | 36 | 9 | 38 | 35 | 23 | 27 | 41 |
| Sunny days | 10 | 14 | 7 | 19 | 8 | 12 | 21 | 18 | 19 | 21 | 21 | 19 |
| Rainy days | 2 | 2 | 4 | 5 | 23 | 18 | 10 | 13 | 11 | 10 | 6 | 2 |
| Snow days | 19 | 12 | 20 | 6 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 10 |
The best time to visit Roy Summit during the most sunny months:
The largest precipitation sum in Roy Summit is at