Yes
you do need a jacket based on the weather in Horsham, PA, USA 1 second ago
Why? Because it's why-did-i-leave-my bed degrees out!
30°F-1°C & Mostly Clear
Wind is 2 mph4 km/h from the Northeast, gusting to 6 mph9 km/h
| December 26 | ||||
| 11am | 31°F-1°C | 3 mph5 km/h Northeast | Clear | |
| 12pm | 34°F1°C | 2 mph4 km/h Northeast | Clear | |
| 1pm | 36°F2°C | 2 mph3 km/h Northeast | Clear | |
| 2pm | 37°F3°C | 2 mph3 km/h Northeast | Clear | |
| 3pm | 37°F3°C | 1 mph2 km/h North | Clear | |
| 4pm | 36°F2°C | 1 mph2 km/h Northeast | Clear | |
| 5pm | 34°F1°C | 1 mph2 km/h Northeast | Clear | |
| 6pm | 32°F-0°C | 2 mph3 km/h Northeast | Clear | |
| 7pm | 30°F-1°C | 2 mph3 km/h Northeast | Clear | |
| 8pm | 29°F-2°C | 2 mph4 km/h Northeast | Clear | |
| 9pm | 28°F-2°C | 2 mph3 km/h Northeast | Clear | |
| 10pm | 27°F-3°C | 2 mph3 km/h Northeast | Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| December 26 | 20°F-6°C | 37°F3°C | 2 mph3 km/h from Northeast | Clear | Clear |
| December 27 | 22°F-5°C | 42°F5°C | 2 mph3 km/h from East | Mostly Cloudy | Drizzle |
| December 28 | 33°F1°C | 50°F10°C | 3 mph5 km/h from Southeast | Rain | Rain |
| December 29 | 48°F9°C | 59°F15°C | 11 mph18 km/h from South | Rain | Rain |
| December 30 | 40°F5°C | 54°F12°C | 8 mph13 km/h from West | Drizzle | Mostly Clear |
| December 31 | 36°F2°C | 51°F11°C | 5 mph9 km/h from Southeast | Rain | Drizzle |
| January 1 | 36°F2°C | 50°F10°C | 13 mph21 km/h from West | Mostly Cloudy | Mostly Clear |
Yes
Low of 22°F-6°C, High of 42°F6°CWind: 2 mph3 km/h
Precipitation: None