Yes
you do need a jacket based on the weather in Chalfont, PA 18914, USA 1 second ago
Why? Because it's colder than a polar bear's pyjamas!
22°F-6°C & Cloudy
Wind is 3 mph5 km/h from the South, gusting to 11 mph17 km/h
| December 23 | ||||
| 10pm | 22°F-6°C | 4 mph6 km/h South | Cloudy | |
| 11pm | 22°F-6°C | 4 mph7 km/h South | Cloudy | |
| December 24 | ||||
| 12am | 22°F-6°C | 4 mph7 km/h South | Cloudy | |
| 1am | 22°F-6°C | 3 mph5 km/h Southwest | Cloudy | |
| 2am | 22°F-6°C | 3 mph5 km/h Southwest | Cloudy | |
| 3am | 22°F-6°C | 4 mph6 km/h Southwest | Cloudy | |
| 4am | 22°F-6°C | 4 mph6 km/h Southwest | Cloudy | |
| 5am | 22°F-5°C | 4 mph6 km/h Southwest | Cloudy | |
| 6am | 23°F-5°C | 4 mph7 km/h Southwest | Cloudy | |
| 7am | 24°F-4°C | 4 mph7 km/h Southwest | Snow | |
| 8am | 25°F-4°C | 4 mph7 km/h West | Snow | |
| 9am | 26°F-3°C | 5 mph8 km/h West | Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| December 23 | 3°F-16°C | 26°F-3°C | 1 mph1 km/h from Southeast | Mostly Clear | Snow |
| December 24 | 22°F-6°C | 39°F4°C | 5 mph8 km/h from West | Snow | Partly Cloudy |
| December 25 | 23°F-5°C | 36°F2°C | 3 mph6 km/h from North | Partly Cloudy | Mostly Cloudy |
| December 26 | 23°F-5°C | 37°F3°C | 2 mph4 km/h from North | Partly Cloudy | Mostly Clear |
| December 27 | 21°F-6°C | 40°F4°C | 2 mph4 km/h from Northeast | Partly Cloudy | Mostly Cloudy |
| December 28 | 30°F-1°C | 41°F5°C | 4 mph6 km/h from East | Mostly Cloudy | Drizzle |
| December 29 | 35°F2°C | 52°F11°C | 9 mph14 km/h from East | Rain | Rain |
Yes
Low of 22°F-6°C, High of 39°F4°CWind: 5 mph8 km/h
Precipitation: 53% snow