Average annual temperature is 11.0 °C
Absolute maximum temperature: 29.1 °C
Absolute minimum temperature: -3.1 °C
Number of sunny days: 114 days
Number of rainy days: 251 days
Look at detailed online map of Reston
* Weather data for Reston United Kingdom is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 12.9 | 14.5 | 14.7 | 16.7 | 18.1 | 29.1 | 26.6 | 24.8 | 27.5 | 22.3 | 14.1 | 14.2 |
| Average daytime temperature (°C) | 7.9 | 9.8 | 9.9 | 11.3 | 14.3 | 19.0 | 20.2 | 20.6 | 20.3 | 15.5 | 10.0 | 9.3 |
| Average temperature (°C) | 5.1 | 6.8 | 7.0 | 8.2 | 11.5 | 15.9 | 16.7 | 16.8 | 16.7 | 12.6 | 7.5 | 7.2 |
| Average night temperature (°C) | 2.3 | 4.3 | 4.0 | 5.0 | 8.6 | 12.5 | 13.0 | 13.0 | 13.4 | 9.7 | 5.0 | 4.9 |
| Absolute minimum temperature (°C) | -3.1 | -1.1 | -3.0 | 1.5 | 5.0 | 8.9 | 10.5 | 9.4 | 8.9 | 3.4 | -1.7 | -2.5 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 8.0 | 10.0 | 12.0 | 14.0 | 16.0 | 16.0 | 16.0 | 15.0 | 13.0 | 11.0 | 9.0 | 7.0 |
| Daylight mean duration (h) | 8.2 | 9.8 | 11.9 | 14.0 | 15.9 | 16.9 | 16.4 | 14.7 | 12.7 | 10.6 | 8.7 | 7.6 |
| Daylight minimum duration (h) | 7.0 | 8.0 | 10.0 | 13.0 | 15.0 | 16.0 | 15.0 | 13.0 | 11.0 | 9.0 | 7.0 | 7.0 |
| Sunshine mean duration (h) | 4.7 | 6.0 | 4.9 | 9.2 | 10.6 | 11.7 | 11.2 | 11.3 | 8.5 | 4.7 | 4.2 | 2.6 |
| Precipitation (mm) | 34 | 15 | 92 | 90 | 50 | 53 | 98 | 72 | 99 | 159 | 80 | 100 |
| Sunny days | 15 | 16 | 2 | 6 | 12 | 15 | 3 | 6 | 11 | 9 | 9 | 10 |
| Rainy days | 16 | 12 | 29 | 24 | 19 | 15 | 28 | 25 | 19 | 22 | 21 | 21 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Reston during the most sunny months:
Months with the longest average daylight duration in Reston:
The largest precipitation sum in Reston is at