No
you don't need a jacket based on the weather in King of Prussia, PA, USA 1 second ago
66°F19°C & Cloudy
Wind is 2 mph4 km/h from the North, gusting to 12 mph20 km/h
| September 18 | ||||
| 1am | 66°F19°C | 3 mph5 km/h North | Cloudy | |
| 2am | 65°F18°C | 3 mph5 km/h Northwest | Cloudy | |
| 3am | 65°F18°C | 3 mph5 km/h North | Cloudy | |
| 4am | 64°F18°C | 3 mph4 km/h North | Mostly Cloudy | |
| 5am | 64°F18°C | 3 mph5 km/h Northwest | Partly Cloudy | |
| 6am | 62°F17°C | 3 mph5 km/h Northwest | Partly Cloudy | |
| 7am | 62°F17°C | 3 mph5 km/h Northwest | Partly Cloudy | |
| 8am | 64°F18°C | 2 mph4 km/h Northwest | Mostly Cloudy | |
| 9am | 66°F19°C | 3 mph4 km/h Northwest | Partly Cloudy | |
| 10am | 70°F21°C | 4 mph6 km/h Northwest | Mostly Clear | |
| 11am | 73°F23°C | 4 mph7 km/h Northwest | Mostly Clear | |
| 12pm | 76°F24°C | 4 mph7 km/h Northwest | Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 18 | 62°F16°C | 81°F27°C | 4 mph7 km/h from Northwest | Mostly Clear | Clear |
| September 19 | 60°F16°C | 83°F29°C | 5 mph8 km/h from Northwest | Mostly Clear | Mostly Clear |
| September 20 | 57°F14°C | 75°F24°C | 7 mph12 km/h from East | Mostly Clear | Mostly Clear |
| September 21 | 57°F14°C | 75°F24°C | 6 mph9 km/h from Southeast | Mostly Cloudy | Partly Cloudy |
| September 22 | 58°F14°C | 78°F25°C | 5 mph8 km/h from South | Mostly Clear | Mostly Clear |
| September 23 | 62°F16°C | 81°F27°C | 6 mph10 km/h from Southwest | Mostly Cloudy | Thunderstorms |
| September 24 | 64°F18°C | 79°F26°C | 5 mph8 km/h from West | Partly Cloudy | Partly Cloudy |
No
Low of 61°F16°C, High of 83°F29°CWind: 5 mph8 km/h
Precipitation: None