Average annual temperature is 14.0 °C
Absolute maximum temperature: 38.0 °C
Absolute minimum temperature: -13.2 °C
Number of sunny days: 209 days
Number of rainy days: 150 days
Number of snow days: 6 days
Look at detailed online map of Ashburn
* Weather data for Ashburn 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) | 18.8 | 17.2 | 21.7 | 29.4 | 31.2 | 34.5 | 37.4 | 38.0 | 33.4 | 30.5 | 25.2 | 17.3 |
| Average daytime temperature (°C) | 7.4 | 10.1 | 11.8 | 20.4 | 25.8 | 29.8 | 31.5 | 29.7 | 27.3 | 20.0 | 13.1 | 9.4 |
| Average temperature (°C) | 2.2 | 3.7 | 5.9 | 13.2 | 19.3 | 23.7 | 25.7 | 24.4 | 21.3 | 15.0 | 7.4 | 5.2 |
| Average night temperature (°C) | -1.1 | -1.1 | 1.6 | 7.2 | 13.5 | 17.8 | 20.5 | 20.2 | 16.3 | 10.7 | 2.7 | 2.1 |
| Absolute minimum temperature (°C) | -11.9 | -13.2 | -8.7 | 0.8 | 5.7 | 11.3 | 16.4 | 13.2 | 12.2 | -1.1 | -6.8 | -5.6 |
| 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 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.7 | 10.7 | 12.0 | 13.3 | 14.4 | 14.9 | 14.6 | 13.7 | 12.5 | 11.2 | 10.0 | 9.4 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 5.4 | 7.7 | 7.0 | 10.3 | 11.6 | 12.5 | 12.4 | 10.3 | 10.3 | 7.4 | 7.7 | 5.2 |
| Precipitation (mm) | 53 | 100 | 100 | 33 | 93 | 38 | 39 | 144 | 15 | 88 | 13 | 87 |
| Sunny days | 17 | 19 | 15 | 18 | 18 | 20 | 13 | 12 | 18 | 16 | 26 | 17 |
| Rainy days | 9 | 8 | 16 | 12 | 13 | 10 | 18 | 19 | 12 | 15 | 4 | 14 |
| Snow days | 5 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Ashburn during the most sunny months:
The largest precipitation sum in Ashburn is at