Average annual temperature is 22.3 °C
Absolute maximum temperature: 38.1 °C
Absolute minimum temperature: -0.6 °C
Number of sunny days: 135 days
Number of rainy days: 230 days
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* Weather data for Royal 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) | 28.5 | 30.9 | 32.6 | 33.3 | 34.3 | 36.2 | 37.2 | 38.1 | 34.7 | 30.7 | 30.7 | 27.9 |
| Average daytime temperature (°C) | 22.1 | 25.9 | 27.2 | 29.7 | 30.1 | 31.9 | 33.9 | 35.0 | 31.9 | 28.0 | 24.0 | 20.8 |
| Average temperature (°C) | 15.4 | 18.7 | 20.3 | 23.0 | 23.8 | 25.9 | 27.8 | 28.8 | 26.0 | 22.5 | 18.7 | 15.9 |
| Average night temperature (°C) | 10.6 | 13.5 | 15.0 | 17.7 | 18.7 | 21.6 | 23.9 | 24.3 | 22.0 | 18.2 | 14.7 | 12.5 |
| Absolute minimum temperature (°C) | -0.6 | 6.0 | 5.4 | 10.9 | 13.5 | 18.2 | 22.5 | 22.5 | 17.1 | 9.8 | 4.6 | 4.3 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 13.0 | 13.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 |
| Daylight mean duration (h) | 10.5 | 11.2 | 12.0 | 12.9 | 13.6 | 14.0 | 13.8 | 13.2 | 12.3 | 11.5 | 10.7 | 10.3 |
| Daylight minimum duration (h) | 10.0 | 10.0 | 11.0 | 12.0 | 13.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 | 10.0 |
| Sunshine mean duration (h) | 8.5 | 9.2 | 9.9 | 9.8 | 11.5 | 11.1 | 11.1 | 11.2 | 10.2 | 9.1 | 6.8 | 6.9 |
| Precipitation (mm) | 55 | 30 | 66 | 68 | 88 | 122 | 134 | 103 | 156 | 36 | 131 | 111 |
| Sunny days | 20 | 19 | 14 | 7 | 12 | 3 | 1 | 1 | 7 | 22 | 15 | 14 |
| Rainy days | 11 | 9 | 17 | 23 | 19 | 27 | 30 | 30 | 23 | 9 | 15 | 17 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Royal is at