Average annual temperature is 13.1 °C
Absolute maximum temperature: 35.0 °C
Absolute minimum temperature: -10.7 °C
Number of sunny days: 184 days
Number of rainy days: 177 days
Number of snow days: 4 days
Look at detailed online map of Borough of West Chester
* Weather data for Borough of West Chester 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) | 17.2 | 19.0 | 18.2 | 29.9 | 29.5 | 34.9 | 33.4 | 32.0 | 35.0 | 27.6 | 20.9 | 16.7 |
| Average daytime temperature (°C) | 8.6 | 9.5 | 10.9 | 19.7 | 22.6 | 26.9 | 30.4 | 28.5 | 24.9 | 19.9 | 11.7 | 9.0 |
| Average temperature (°C) | 4.7 | 4.4 | 5.3 | 13.3 | 15.9 | 20.4 | 24.5 | 23.1 | 19.8 | 14.4 | 6.6 | 4.9 |
| Average night temperature (°C) | 1.6 | 0.1 | 0.5 | 8.1 | 9.4 | 14.9 | 20.0 | 18.6 | 15.7 | 10.1 | 2.4 | 1.6 |
| Absolute minimum temperature (°C) | -4.3 | -10.7 | -5.7 | 0.1 | 3.2 | 10.3 | 16.9 | 14.6 | 10.5 | 4.5 | -5.3 | -4.0 |
| 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) | 4.8 | 6.9 | 7.5 | 9.2 | 11.5 | 10.8 | 11.7 | 10.4 | 8.0 | 8.5 | 7.7 | 4.8 |
| Precipitation (mm) | 99 | 46 | 77 | 144 | 35 | 121 | 137 | 55 | 157 | 47 | 71 | 179 |
| Sunny days | 12 | 16 | 15 | 16 | 18 | 11 | 8 | 15 | 15 | 20 | 21 | 17 |
| Rainy days | 19 | 10 | 15 | 14 | 13 | 19 | 23 | 16 | 15 | 11 | 8 | 14 |
| Snow days | 0 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 |
The best time to visit Borough of West Chester during the most sunny months:
The largest precipitation sum in Borough of West Chester is at