Average annual temperature is 19.6 °C
Absolute maximum temperature: 39.5 °C
Absolute minimum temperature: -2.8 °C
Number of sunny days: 186 days
Number of rainy days: 179 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) | 24.9 | 27.8 | 28.5 | 30.2 | 34.1 | 36.9 | 37.7 | 39.5 | 34.7 | 31.5 | 27.3 | 24.0 |
| Average daytime temperature (°C) | 17.1 | 20.3 | 22.0 | 24.1 | 29.4 | 32.5 | 34.4 | 36.4 | 31.9 | 26.1 | 19.4 | 16.2 |
| Average temperature (°C) | 11.9 | 14.1 | 15.7 | 17.8 | 22.4 | 26.0 | 27.8 | 29.6 | 25.6 | 19.7 | 13.5 | 10.4 |
| Average night temperature (°C) | 8.0 | 9.8 | 11.0 | 12.8 | 17.0 | 20.6 | 23.0 | 24.2 | 20.4 | 14.5 | 9.2 | 6.0 |
| Absolute minimum temperature (°C) | -1.1 | -1.1 | -2.8 | 8.2 | 9.4 | 18.9 | 20.4 | 19.7 | 16.6 | 7.3 | 0.5 | -0.3 |
| 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) | 10.3 | 11.0 | 12.0 | 13.0 | 13.8 | 14.2 | 14.0 | 13.3 | 12.4 | 11.4 | 10.5 | 10.1 |
| Daylight minimum duration (h) | 10.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 | 10.0 |
| Sunshine mean duration (h) | 6.5 | 7.4 | 8.7 | 9.1 | 10.7 | 11.7 | 11.2 | 11.4 | 11.1 | 9.1 | 6.9 | 7.8 |
| Precipitation (mm) | 216 | 169 | 185 | 135 | 98 | 96 | 148 | 43 | 48 | 23 | 63 | 64 |
| Sunny days | 14 | 10 | 18 | 13 | 12 | 8 | 8 | 18 | 17 | 26 | 19 | 23 |
| Rainy days | 17 | 18 | 13 | 17 | 19 | 22 | 23 | 13 | 13 | 5 | 11 | 8 |
| 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