Average annual temperature is 15.6 °C
Absolute maximum temperature: 34.8 °C
Absolute minimum temperature: -8.1 °C
Number of sunny days: 182 days
Number of rainy days: 183 days
Look at detailed online map of Willow Grove
* Weather data for Willow Grove 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) | 20.9 | 24.4 | 22.9 | 29.3 | 26.3 | 29.6 | 34.8 | 34.2 | 34.5 | 27.1 | 23.7 | 18.5 |
| Average daytime temperature (°C) | 11.7 | 12.8 | 13.7 | 20.4 | 20.7 | 25.6 | 30.3 | 29.1 | 26.7 | 21.5 | 14.6 | 12.1 |
| Average temperature (°C) | 7.6 | 8.2 | 8.7 | 15.3 | 16.6 | 21.3 | 26.1 | 25.0 | 22.4 | 16.8 | 10.0 | 8.1 |
| Average night temperature (°C) | 4.3 | 4.1 | 4.4 | 11.3 | 13.2 | 17.6 | 22.9 | 21.9 | 19.0 | 13.0 | 6.2 | 4.9 |
| Absolute minimum temperature (°C) | -2.9 | -8.1 | -2.1 | 3.1 | 6.9 | 12.4 | 19.7 | 17.3 | 14.2 | 7.1 | -3.6 | -1.5 |
| 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) | 9.9 | 10.8 | 12.0 | 13.2 | 14.2 | 14.8 | 14.5 | 13.6 | 12.4 | 11.2 | 10.1 | 9.6 |
| 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) | 5.7 | 7.3 | 7.9 | 9.5 | 10.5 | 11.2 | 11.8 | 10.3 | 8.9 | 9.0 | 7.7 | 6.0 |
| Precipitation (mm) | 89 | 51 | 49 | 161 | 97 | 124 | 114 | 133 | 125 | 46 | 46 | 132 |
| Sunny days | 12 | 16 | 18 | 18 | 15 | 13 | 9 | 8 | 12 | 21 | 24 | 16 |
| Rainy days | 19 | 12 | 13 | 12 | 16 | 17 | 22 | 23 | 18 | 10 | 6 | 15 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Willow Grove during the most sunny months:
The largest precipitation sum in Willow Grove is at