No
you don't need a jacket based on the weather in West Chester, PA, USA 1 second ago
66°F19°C & Mostly Clear
Wind is 4 mph7 km/h from the Northwest, gusting to 10 mph16 km/h
| September 7 | ||||
| 8pm | 64°F18°C | 5 mph9 km/h Northwest | Clear | |
| 9pm | 61°F16°C | 6 mph9 km/h Northwest | Clear | |
| 10pm | 60°F15°C | 6 mph9 km/h Northwest | Clear | |
| 11pm | 58°F15°C | 6 mph10 km/h Northwest | Clear | |
| September 8 | ||||
| 12am | 57°F14°C | 7 mph11 km/h North | Clear | |
| 1am | 56°F14°C | 6 mph9 km/h North | Clear | |
| 2am | 55°F13°C | 5 mph8 km/h North | Clear | |
| 3am | 54°F12°C | 5 mph8 km/h North | Clear | |
| 4am | 53°F12°C | 5 mph8 km/h North | Clear | |
| 5am | 53°F11°C | 5 mph8 km/h North | Clear | |
| 6am | 52°F11°C | 5 mph7 km/h North | Clear | |
| 7am | 52°F11°C | 5 mph8 km/h North | Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 7 | 57°F14°C | 73°F23°C | 2 mph3 km/h from Northwest | Drizzle | Clear |
| September 8 | 52°F11°C | 72°F22°C | 5 mph8 km/h from Northeast | Clear | Clear |
| September 9 | 52°F11°C | 73°F23°C | 7 mph11 km/h from Northeast | Partly Cloudy | Mostly Clear |
| September 10 | 55°F13°C | 73°F23°C | 6 mph9 km/h from Northeast | Mostly Cloudy | Mostly Clear |
| September 11 | 56°F13°C | 77°F25°C | 5 mph9 km/h from North | Mostly Clear | Mostly Clear |
| September 12 | 57°F14°C | 75°F24°C | 6 mph9 km/h from Northeast | Mostly Clear | Mostly Clear |
| September 13 | 55°F13°C | 74°F23°C | 3 mph4 km/h from Southeast | Mostly Clear | Clear |
Yes
Low of 52°F11°C, High of 73°F23°CWind: 5 mph8 km/h
Precipitation: None