Yes
you do need a jacket based on the weather in Lancaster, PA, USA 1 second ago
Why? Because it's colder than a polar bear's pyjamas!
13°F-11°C & Mostly Clear
Wind is 1 mph2 km/h from the South, gusting to 6 mph9 km/h
| January 23 | ||||
| 10am | 16°F-9°C | 4 mph6 km/h South | Clear | |
| 11am | 20°F-7°C | 6 mph9 km/h Southwest | Clear | |
| 12pm | 23°F-5°C | 6 mph10 km/h Southwest | Clear | |
| 1pm | 25°F-4°C | 6 mph10 km/h Southwest | Clear | |
| 2pm | 27°F-3°C | 5 mph9 km/h Southwest | Clear | |
| 3pm | 28°F-2°C | 5 mph8 km/h Southwest | Clear | |
| 4pm | 27°F-3°C | 4 mph6 km/h Southwest | Clear | |
| 5pm | 23°F-5°C | 3 mph5 km/h Southwest | Clear | |
| 6pm | 20°F-7°C | 4 mph6 km/h South | Clear | |
| 7pm | 18°F-8°C | 4 mph6 km/h Southwest | Mostly Clear | |
| 8pm | 17°F-8°C | 4 mph7 km/h Southwest | Mostly Clear | |
| 9pm | 17°F-9°C | 5 mph7 km/h Southwest | Mostly Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| January 23 | 4°F-16°C | 28°F-2°C | 4 mph7 km/h from Southwest | Mostly Clear | Mostly Clear |
| January 24 | 12°F-11°C | 28°F-2°C | 8 mph13 km/h from West | Partly Cloudy | Mostly Clear |
| January 25 | 10°F-12°C | 30°F-1°C | 7 mph11 km/h from Southwest | Partly Cloudy | Mostly Cloudy |
| January 26 | 21°F-6°C | 37°F3°C | 10 mph16 km/h from West | Mostly Cloudy | Partly Cloudy |
| January 27 | 21°F-6°C | 41°F5°C | 11 mph18 km/h from Southwest | Mostly Clear | Partly Cloudy |
| January 28 | 24°F-5°C | 42°F5°C | 14 mph22 km/h from West | Mostly Cloudy | Partly Cloudy |
| January 29 | 16°F-9°C | 34°F1°C | 9 mph14 km/h from West | Mostly Cloudy | Partly Cloudy |
Yes
Low of 11°F-12°C, High of 28°F-2°CWind: 8 mph13 km/h
Precipitation: None