Average annual temperature is 21.8 °C
Absolute maximum temperature: 41.3 °C
Absolute minimum temperature: 0.3 °C
Number of sunny days: 131 days
Number of rainy days: 234 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) | 26.3 | 28.4 | 29.1 | 29.5 | 33.7 | 37.3 | 38.6 | 41.3 | 36.1 | 32.3 | 29.2 | 26.4 |
| Average daytime temperature (°C) | 20.1 | 22.1 | 23.9 | 25.0 | 30.3 | 33.3 | 34.8 | 37.1 | 33.1 | 27.3 | 20.8 | 17.9 |
| Average temperature (°C) | 15.0 | 16.5 | 18.5 | 20.2 | 24.6 | 27.7 | 29.2 | 31.3 | 27.5 | 21.8 | 16.1 | 13.2 |
| Average night temperature (°C) | 10.8 | 12.8 | 14.7 | 16.6 | 19.9 | 23.3 | 24.9 | 26.5 | 23.1 | 17.5 | 12.4 | 9.6 |
| Absolute minimum temperature (°C) | 1.5 | 3.3 | 0.3 | 9.0 | 12.9 | 19.7 | 22.0 | 22.6 | 20.3 | 9.3 | 4.8 | 1.9 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 13.0 | 14.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 |
| Daylight mean duration (h) | 10.5 | 11.1 | 12.0 | 12.9 | 13.7 | 14.0 | 13.9 | 13.2 | 12.3 | 11.4 | 10.7 | 10.2 |
| Daylight minimum duration (h) | 10.0 | 10.0 | 11.0 | 12.0 | 13.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 | 10.0 |
| Sunshine mean duration (h) | 7.0 | 7.9 | 9.1 | 8.8 | 10.8 | 11.3 | 11.3 | 11.9 | 11.1 | 9.1 | 6.2 | 7.8 |
| Precipitation (mm) | 138 | 111 | 91 | 105 | 78 | 98 | 110 | 36 | 58 | 37 | 103 | 179 |
| Sunny days | 11 | 9 | 10 | 12 | 6 | 2 | 5 | 11 | 9 | 20 | 16 | 20 |
| Rainy days | 20 | 19 | 21 | 18 | 25 | 28 | 26 | 20 | 21 | 11 | 14 | 11 |
| 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