Average annual temperature is 17.0 °C
Absolute maximum temperature: 37.2 °C
Absolute minimum temperature: -5.1 °C
Number of sunny days: 189 days
Number of rainy days: 176 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) | 21.8 | 24.0 | 25.8 | 29.3 | 31.2 | 35.9 | 36.0 | 37.2 | 32.8 | 31.4 | 26.4 | 19.4 |
| Average daytime temperature (°C) | 13.3 | 15.7 | 17.3 | 21.5 | 26.5 | 31.0 | 32.5 | 31.8 | 29.4 | 24.0 | 16.8 | 13.5 |
| Average temperature (°C) | 8.4 | 9.9 | 11.4 | 15.2 | 20.6 | 24.5 | 26.7 | 26.2 | 23.2 | 18.1 | 11.1 | 8.1 |
| Average night temperature (°C) | 4.6 | 5.7 | 6.9 | 10.3 | 15.5 | 18.9 | 22.1 | 21.9 | 18.1 | 13.5 | 6.6 | 4.2 |
| Absolute minimum temperature (°C) | -3.6 | -4.7 | -5.1 | 3.8 | 7.3 | 14.2 | 17.7 | 16.1 | 14.0 | 0.0 | -1.4 | -3.2 |
| 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 | 14.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 10.1 | 10.9 | 12.0 | 13.1 | 14.0 | 14.5 | 14.3 | 13.5 | 12.4 | 11.3 | 10.3 | 9.8 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 5.4 | 6.2 | 7.8 | 8.6 | 11.0 | 12.4 | 11.0 | 10.1 | 10.7 | 8.5 | 7.5 | 7.0 |
| Precipitation (mm) | 172 | 87 | 199 | 163 | 100 | 50 | 104 | 196 | 42 | 29 | 50 | 58 |
| Sunny days | 11 | 14 | 16 | 13 | 14 | 14 | 12 | 15 | 15 | 23 | 23 | 19 |
| Rainy days | 20 | 14 | 15 | 17 | 17 | 16 | 19 | 16 | 15 | 8 | 7 | 12 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Roy during the most sunny months:
The largest precipitation sum in Roy is at