Average annual temperature is 7.9 °C
Absolute maximum temperature: 29.0 °C
Absolute minimum temperature: -25.0 °C
Number of sunny days: 116 days
Number of rainy days: 213 days
Number of snow days: 36 days
Look at detailed online map of Town of Great Valley
* Weather data for Town of Great Valley 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) | 11.4 | 14.7 | 13.0 | 25.5 | 27.6 | 28.5 | 29.0 | 27.5 | 28.1 | 25.0 | 13.9 | 11.9 |
| Average daytime temperature (°C) | 2.0 | 4.6 | 3.9 | 14.3 | 17.8 | 21.2 | 24.1 | 22.1 | 19.9 | 13.5 | 5.9 | 4.4 |
| Average temperature (°C) | -1.4 | -1.8 | -1.0 | 7.5 | 11.2 | 15.8 | 19.0 | 17.2 | 14.8 | 9.5 | 1.8 | 1.1 |
| Average night temperature (°C) | -4.1 | -6.5 | -4.7 | 2.2 | 5.3 | 11.1 | 14.7 | 13.5 | 11.0 | 6.2 | -1.4 | -1.4 |
| Absolute minimum temperature (°C) | -12.8 | -25.0 | -11.9 | -8.0 | -2.3 | 6.8 | 10.9 | 9.1 | 6.3 | -3.0 | -10.5 | -7.8 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.5 | 10.6 | 11.9 | 13.4 | 14.6 | 15.2 | 14.9 | 13.9 | 12.5 | 11.1 | 9.8 | 9.2 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 2.1 | 5.5 | 5.3 | 8.3 | 11.2 | 10.7 | 11.4 | 9.8 | 8.6 | 5.4 | 5.6 | 3.2 |
| Precipitation (mm) | 131 | 83 | 123 | 109 | 49 | 94 | 116 | 139 | 34 | 91 | 67 | 90 |
| Sunny days | 5 | 6 | 5 | 12 | 20 | 9 | 8 | 4 | 15 | 13 | 9 | 10 |
| Rainy days | 16 | 17 | 15 | 17 | 11 | 21 | 23 | 27 | 15 | 18 | 18 | 15 |
| Snow days | 10 | 5 | 11 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 6 |
The best time to visit Town of Great Valley during the most sunny months:
The largest precipitation sum in Town of Great Valley is at