Yes
you do need a jacket based on the weather in Collegeville, PA 19426, USA 1 second ago
Why? Because it's colder than a polar bear's pyjamas and it's so windy, your hat has officially retired from your head!
18°F-8°C & Clear
Wind is 7 mph12 km/h from the Northwest, gusting to 20 mph32 km/h
| December 22 | ||||
| 1am | 17°F-8°C | 8 mph12 km/h Northwest | Clear | |
| 2am | 16°F-9°C | 8 mph12 km/h Northwest | Clear | |
| 3am | 16°F-9°C | 7 mph12 km/h Northwest | Clear | |
| 4am | 15°F-9°C | 7 mph11 km/h Northwest | Clear | |
| 5am | 15°F-10°C | 7 mph11 km/h Northwest | Clear | |
| 6am | 15°F-10°C | 7 mph11 km/h Northwest | Clear | |
| 7am | 14°F-10°C | 7 mph12 km/h Northwest | Clear | |
| 8am | 15°F-9°C | 8 mph12 km/h Northwest | Clear | |
| 9am | 17°F-8°C | 9 mph14 km/h Northwest | Clear | |
| 10am | 19°F-7°C | 9 mph15 km/h Northwest | Clear | |
| 11am | 21°F-6°C | 9 mph14 km/h Northwest | Clear | |
| 12pm | 23°F-5°C | 9 mph14 km/h Northwest | Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| December 22 | 14°F-10°C | 26°F-3°C | 7 mph12 km/h from Northwest | Clear | Clear |
| December 23 | 11°F-12°C | 30°F-1°C | 3 mph5 km/h from Southeast | Partly Cloudy | Cloudy |
| December 24 | 23°F-5°C | 40°F5°C | 4 mph6 km/h from West | Partly Cloudy | Partly Cloudy |
| December 25 | 24°F-4°C | 36°F2°C | 3 mph5 km/h from Northeast | Mostly Cloudy | Mostly Cloudy |
| December 26 | 25°F-4°C | 41°F5°C | 3 mph4 km/h from North | Partly Cloudy | Mostly Cloudy |
| December 27 | 25°F-4°C | 39°F4°C | 5 mph8 km/h from East | Mostly Cloudy | Cloudy |
| December 28 | 30°F-1°C | 41°F5°C | 5 mph9 km/h from East | Drizzle | Drizzle |
Yes
Low of 11°F-12°C, High of 30°F-1°CWind: 3 mph5 km/h
Precipitation: None