No
you don't need a jacket based on the weather in Horsham, PA, USA 1 second ago
63°F17°C & Cloudy
Wind is 3 mph5 km/h from the Northeast, gusting to 9 mph14 km/h
| September 16 | ||||
| 1am | 63°F17°C | 5 mph7 km/h Northeast | Cloudy | |
| 2am | 62°F17°C | 5 mph8 km/h Northeast | Cloudy | |
| 3am | 62°F17°C | 5 mph8 km/h Northeast | Cloudy | |
| 4am | 61°F16°C | 5 mph9 km/h Northeast | Cloudy | |
| 5am | 61°F16°C | 6 mph9 km/h Northeast | Cloudy | |
| 6am | 61°F16°C | 7 mph10 km/h Northeast | Cloudy | |
| 7am | 62°F16°C | 7 mph11 km/h Northeast | Cloudy | |
| 8am | 63°F17°C | 7 mph11 km/h Northeast | Cloudy | |
| 9am | 66°F19°C | 8 mph14 km/h Northeast | Mostly Cloudy | |
| 10am | 69°F21°C | 10 mph15 km/h Northeast | Mostly Cloudy | |
| 11am | 72°F22°C | 10 mph16 km/h Northeast | Mostly Cloudy | |
| 12pm | 74°F23°C | 11 mph18 km/h Northeast | Mostly Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 16 | 61°F16°C | 75°F24°C | 10 mph16 km/h from Northeast | Mostly Cloudy | Mostly Cloudy |
| September 17 | 62°F17°C | 70°F21°C | 9 mph15 km/h from Northeast | Rain | Drizzle |
| September 18 | 64°F18°C | 77°F25°C | 5 mph8 km/h from North | Thunderstorms | Mostly Clear |
| September 19 | 62°F17°C | 81°F27°C | 6 mph10 km/h from Northwest | Mostly Clear | Clear |
| September 20 | 58°F14°C | 76°F25°C | 7 mph11 km/h from East | Mostly Clear | Mostly Clear |
| September 21 | 57°F14°C | 74°F24°C | 6 mph9 km/h from Southeast | Partly Cloudy | Mostly Clear |
| September 22 | 57°F14°C | 78°F26°C | 4 mph6 km/h from South | Mostly Clear | Mostly Clear |
No
Low of 63°F17°C, High of 70°F21°CWind: 9 mph15 km/h
Precipitation: 59% rain