Average annual temperature is 16.2 °C
Absolute maximum temperature: 39.7 °C
Absolute minimum temperature: -10.7 °C
Number of sunny days: 248 days
Number of rainy days: 112 days
Number of snow days: 5 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) | 20.3 | 24.0 | 26.0 | 29.6 | 33.1 | 39.7 | 39.3 | 39.0 | 39.0 | 30.1 | 27.8 | 21.1 |
| Average daytime temperature (°C) | 12.3 | 15.0 | 19.0 | 23.6 | 27.2 | 31.1 | 34.6 | 35.7 | 30.8 | 23.3 | 17.4 | 13.3 |
| Average temperature (°C) | 5.5 | 6.3 | 10.6 | 14.8 | 19.7 | 23.6 | 27.7 | 28.8 | 24.0 | 16.3 | 10.0 | 6.4 |
| Average night temperature (°C) | 0.5 | 0.5 | 4.0 | 7.9 | 13.3 | 17.0 | 21.4 | 22.3 | 18.1 | 10.6 | 4.8 | 1.4 |
| Absolute minimum temperature (°C) | -10.7 | -8.6 | -2.6 | 1.3 | 6.3 | 11.1 | 16.8 | 16.9 | 12.9 | -3.1 | -3.5 | -4.6 |
| 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 | 10.0 |
| Daylight mean duration (h) | 10.1 | 10.9 | 12.0 | 13.1 | 14.0 | 14.4 | 14.2 | 13.4 | 12.4 | 11.3 | 10.4 | 9.9 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 | 9.0 |
| Sunshine mean duration (h) | 8.0 | 8.3 | 10.3 | 11.0 | 11.3 | 12.0 | 12.9 | 12.1 | 10.9 | 9.4 | 8.3 | 7.9 |
| Precipitation (mm) | 12 | 9 | 6 | 10 | 62 | 54 | 24 | 3 | 24 | 53 | 11 | 43 |
| Sunny days | 24 | 21 | 24 | 21 | 10 | 18 | 21 | 22 | 18 | 21 | 23 | 25 |
| Rainy days | 5 | 6 | 6 | 8 | 21 | 12 | 10 | 9 | 12 | 10 | 7 | 6 |
| Snow days | 2 | 1 | 1 | 1 | 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