Average annual temperature is 6.9 °C
Absolute maximum temperature: 36.2 °C
Absolute minimum temperature: -22.8 °C
Number of sunny days: 187 days
Number of rainy days: 114 days
Number of snow days: 64 days
Look at detailed online map of Roy
* Weather data for Roy 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) | 1.9 | 1.5 | 5.3 | 21.0 | 24.8 | 27.5 | 36.2 | 32.9 | 27.0 | 20.8 | 13.2 | 4.2 |
| Average daytime temperature (°C) | -3.0 | -3.1 | 0.0 | 6.9 | 18.7 | 22.0 | 31.8 | 27.7 | 22.2 | 14.7 | 5.5 | 0.1 |
| Average temperature (°C) | -5.5 | -6.8 | -3.5 | 2.5 | 12.5 | 15.6 | 24.4 | 20.6 | 15.9 | 8.6 | 1.1 | -3.4 |
| Average night temperature (°C) | -8.0 | -9.9 | -6.7 | -1.0 | 6.0 | 9.0 | 16.3 | 14.3 | 9.7 | 4.1 | -2.5 | -7.0 |
| Absolute minimum temperature (°C) | -22.8 | -19.4 | -12.6 | -8.7 | -1.4 | 4.0 | 10.5 | 7.0 | 1.9 | -7.1 | -15.7 | -19.0 |
| 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) | 4.0 | 6.8 | 7.9 | 10.2 | 11.9 | 12.6 | 13.3 | 11.2 | 10.6 | 8.5 | 7.1 | 5.4 |
| Precipitation (mm) | 72 | 37 | 69 | 37 | 56 | 35 | 10 | 42 | 31 | 28 | 33 | 47 |
| Sunny days | 10 | 14 | 8 | 19 | 8 | 12 | 20 | 16 | 18 | 21 | 21 | 20 |
| Rainy days | 5 | 4 | 5 | 2 | 23 | 18 | 11 | 15 | 12 | 10 | 6 | 3 |
| Snow days | 16 | 10 | 18 | 9 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 8 |
The best time to visit Roy during the most sunny months:
The largest precipitation sum in Roy is at