Common information
- Country
- United States
- Population
- 18 461
Weather, climate, temperature by months in West Chester
| Season | Autumn | Winter | Spring | Summer | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Sep | Oct | Nov | Dec | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Year |
| Record high, °C | 38 | 36 | 29 | 26 | 23 | 26 | 31 | 36 | 37 | 38 | 41 | 40 | 41 |
| Average high, °C | 25 | 19 | 12 | 6 | 4 | 5 | 10 | 17 | 23 | 27 | 30 | 29 | 17 |
| Average temperature, °C | 19 | 13 | 7 | 1 | -1 | -0 | 5 | 11 | 16 | 21 | 24 | 23 | 12 |
| Average low, °C | 13 | 7 | 2 | -4 | -5 | -5 | -1 | 5 | 10 | 15 | 18 | 17 | 6 |
| Record low, °C | -11 | -7 | -12 | -24 | -27 | -27 | -19 | -12 | -3 | 2 | 7 | 3 | -27 |
| Rain, days | 9 | 9 | 10 | 10 | 10 | 9 | 11 | 12 | 12 | 11 | 11 | 10 | 122 |
| Snow, days | 0 | 0 | 0 | 2 | 5 | 3 | 1 | 1 | 0 | 0 | 0 | 0 | 12 |
| Snowfall, cm. | 0 | 0 | 3 | 14 | 18 | 22 | 12 | 2 | 0 | 0 | 0 | 0 | 70 |
| Average precipitation, mm. | 105 | 91 | 91 | 95 | 89 | 83 | 98 | 94 | 103 | 108 | 115 | 117 | 1189 |
| Day Length, часов | 13 | 12 | 10 | 10 | 10 | 11 | 13 | 14 | 15 | 16 | 15 | 14 | 13 |
| Growing degree-day, °C | 456 | 159 | 33 | 4 | 1 | 2 | 24 | 115 | 333 | 606 | 766 | 711 | 3210 |
| Solar radiation, global, Mj/m2 | 15 | 11 | 7 | 6 | 7 | 10 | 13 | 16 | 19 | 20 | 20 | 18 | 13 |