Average annual temperature is 13.3 °C
Absolute maximum temperature: 35.9 °C
Absolute minimum temperature: -10.6 °C
Number of sunny days: 181 days
Number of rainy days: 181 days
Number of snow days: 3 days
Look at detailed online map of Valley Forge Mountain
* Weather data for Valley Forge Mountain 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) | 18.5 | 18.7 | 18.8 | 29.9 | 29.9 | 35.3 | 34.0 | 31.8 | 35.9 | 28.2 | 21.5 | 17.1 |
| Average daytime temperature (°C) | 8.9 | 9.7 | 11.1 | 19.9 | 23.0 | 27.1 | 30.7 | 28.7 | 25.2 | 20.1 | 11.9 | 9.3 |
| Average temperature (°C) | 4.9 | 4.5 | 5.4 | 13.4 | 16.0 | 20.5 | 24.7 | 23.2 | 19.8 | 14.5 | 6.6 | 5.1 |
| Average night temperature (°C) | 1.7 | 0.2 | 0.5 | 8.1 | 9.3 | 14.8 | 20.0 | 18.7 | 15.6 | 10.0 | 2.3 | 1.5 |
| Absolute minimum temperature (°C) | -4.7 | -10.6 | -5.2 | -0.1 | 3.4 | 10.1 | 15.9 | 14.1 | 9.8 | 4.0 | -4.9 | -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 | 14.0 | 15.0 | 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 | 15.0 | 14.7 | 13.7 | 12.5 | 11.1 | 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) | 4.7 | 6.8 | 7.4 | 9.1 | 11.6 | 10.7 | 11.6 | 10.2 | 8.0 | 8.4 | 7.7 | 4.7 |
| Precipitation (mm) | 97 | 43 | 93 | 143 | 31 | 114 | 144 | 57 | 174 | 42 | 63 | 181 |
| Sunny days | 13 | 16 | 13 | 15 | 20 | 11 | 10 | 13 | 13 | 20 | 20 | 17 |
| Rainy days | 18 | 10 | 18 | 15 | 11 | 19 | 21 | 18 | 17 | 11 | 9 | 14 |
| Snow days | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 |
The best time to visit Valley Forge Mountain during the most sunny months:
The largest precipitation sum in Valley Forge Mountain is at