Average annual temperature is 14.4 °C
Absolute maximum temperature: 38.2 °C
Absolute minimum temperature: -9.2 °C
Number of sunny days: 182
Number of rainy days: 182
Number of snow days: 1
Average annual precipitation: 1037 mm
Look at detailed online map of Herndon Junction
* Weather data for Herndon Junction United States is based on climate observations for 2023 year
| Jan | Feb | Mar | Apr | Maggio | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 17.8 | 23.2 | 25.6 | 31.7 | 31.2 | 33.8 | 38.2 | 34.5 | 37 | 27.9 | 24.1 | 16.7 |
| Average daytime temperature (°C) | 9.8 | 12.2 | 13.1 | 22.3 | 23.6 | 27.8 | 32.3 | 30.9 | 27 | 21.2 | 13.6 | 10.4 |
| Average temperature (°C) | 5.5 | 6.5 | 7.1 | 15.2 | 16.8 | 21.4 | 25.8 | 24.7 | 21.1 | 15.2 | 7.7 | 5.7 |
| Average night temperature (°C) | 2.1 | 1.9 | 2.2 | 9.2 | 10.6 | 15.6 | 20.8 | 19.6 | 16.3 | 10.3 | 3.1 | 2 |
| Absolute minimum temperature (°C) | -2.8 | -9.2 | -4.9 | 0.6 | 4.9 | 10.9 | 17.9 | 15.2 | 10.6 | 4.3 | -5.2 | -3.8 |
| Jan | Feb | Mar | Apr | Maggio | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.2 | 11.3 | 12.6 | 13.8 | 14.7 | 14.9 | 14.9 | 14.2 | 13.1 | 11.8 | 10.6 | 9.6 |
| Daylight mean duration (h) | 9.8 | 10.7 | 12 | 13.2 | 14.3 | 14.9 | 14.6 | 13.7 | 12.5 | 11.2 | 10.1 | 9.5 |
| Daylight minimum duration (h) | 9.5 | 10.2 | 11.3 | 12.6 | 13.8 | 14.7 | 14.2 | 13.1 | 11.8 | 10.6 | 9.7 | 9.4 |
| Sunshine mean duration (h) | 6.4 | 6.7 | 8.2 | 10.5 | 10.4 | 11.1 | 11.8 | 11 | 9.7 | 8.7 | 8.3 | 6.4 |
| Precipitation (mm) | 69 | 56 | 72 | 118 | 41 | 136 | 105 | 61 | 149 | 30 | 58 | 141 |
| Sunny days | 11 | 16 | 14 | 18 | 16 | 13 | 6 | 14 | 15 | 18 | 23 | 18 |
| Rainy days | 19 | 12 | 17 | 12 | 15 | 17 | 25 | 17 | 15 | 13 | 7 | 13 |
| Snow days | 1 |
The best time to visit Herndon Junction during the most sunny months:
The largest precipitation sum in Herndon Junction is at