Average annual temperature is 20.4 °C
Absolute maximum temperature: 42.0 °C
Absolute minimum temperature: -1.9 °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) | 24.9 | 27.2 | 29.1 | 30.5 | 34.2 | 38.6 | 39.4 | 42.0 | 38.2 | 33.4 | 28.7 | 25.3 |
| Average daytime temperature (°C) | 16.9 | 19.3 | 22.7 | 24.0 | 29.4 | 34.8 | 36.0 | 39.0 | 33.7 | 26.9 | 19.5 | 17.0 |
| Average temperature (°C) | 11.9 | 13.1 | 16.3 | 17.8 | 23.2 | 27.7 | 29.7 | 31.9 | 27.0 | 20.7 | 13.8 | 11.1 |
| Average night temperature (°C) | 8.2 | 8.9 | 11.6 | 13.2 | 17.9 | 22.4 | 24.8 | 26.1 | 21.6 | 16.0 | 9.5 | 6.6 |
| Absolute minimum temperature (°C) | -0.6 | -1.5 | -1.9 | 9.0 | 11.1 | 19.3 | 21.1 | 20.6 | 18.4 | 6.0 | 0.6 | -1.0 |
| 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) | 6.3 | 6.9 | 8.3 | 8.2 | 10.3 | 11.2 | 11.5 | 11.9 | 10.7 | 8.4 | 6.8 | 7.6 |
| Precipitation (mm) | 175 | 152 | 130 | 168 | 87 | 65 | 105 | 23 | 37 | 39 | 61 | 84 |
| Sunny days | 11 | 12 | 13 | 10 | 17 | 8 | 16 | 26 | 15 | 18 | 20 | 23 |
| Rainy days | 20 | 16 | 18 | 20 | 14 | 22 | 15 | 5 | 15 | 13 | 10 | 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