Average annual temperature is 8.7 °C
Absolute maximum temperature: 30.3 °C
Absolute minimum temperature: -17.2 °C
Number of sunny days: 120 days
Number of rainy days: 211 days
Number of snow days: 34 days
Look at detailed online map of Roystone
* Weather data for Roystone 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) | 12.5 | 15.8 | 14.8 | 26.5 | 29.1 | 30.3 | 28.9 | 29.0 | 28.5 | 25.2 | 14.2 | 12.1 |
| Average daytime temperature (°C) | 3.1 | 6.2 | 5.1 | 15.2 | 19.1 | 22.1 | 25.3 | 23.0 | 20.3 | 14.2 | 7.0 | 5.3 |
| Average temperature (°C) | -0.4 | -0.5 | 0.0 | 8.4 | 12.3 | 16.5 | 19.9 | 17.9 | 15.4 | 10.1 | 2.5 | 1.8 |
| Average night temperature (°C) | -3.0 | -5.2 | -3.9 | 3.1 | 6.3 | 11.5 | 15.7 | 14.2 | 11.6 | 6.8 | -0.7 | -0.6 |
| Absolute minimum temperature (°C) | -10.8 | -17.2 | -10.7 | -6.2 | -0.7 | 7.5 | 11.9 | 9.2 | 6.5 | -1.9 | -9.6 | -6.8 |
| 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 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.5 | 10.6 | 11.9 | 13.3 | 14.5 | 15.2 | 14.9 | 13.8 | 12.5 | 11.1 | 9.9 | 9.2 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 14.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 2.1 | 6.1 | 5.5 | 8.1 | 10.7 | 10.5 | 11.4 | 9.8 | 8.4 | 5.8 | 5.8 | 3.2 |
| Precipitation (mm) | 140 | 78 | 119 | 98 | 39 | 116 | 132 | 149 | 54 | 81 | 66 | 94 |
| Sunny days | 6 | 8 | 6 | 10 | 21 | 9 | 6 | 5 | 13 | 13 | 12 | 11 |
| Rainy days | 16 | 15 | 14 | 19 | 10 | 21 | 25 | 26 | 17 | 18 | 15 | 15 |
| Snow days | 9 | 5 | 11 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 5 |
The best time to visit Roystone during the most sunny months:
The largest precipitation sum in Roystone is at