Yes
you do need a jacket based on the weather in Lancaster County, PA, USA 1 second ago
Why? Because too cold for just a hoodie, too warm for a parka and it's fairly windy outside!
38°F4°C & Partly Cloudy
Wind is 13 mph21 km/h from the Northwest, gusting to 22 mph36 km/h
| December 3 | ||||
| 1pm | 39°F4°C | 13 mph21 km/h Northwest | Partly Cloudy | |
| 2pm | 39°F4°C | 13 mph21 km/h Northwest | Partly Cloudy | |
| 3pm | 39°F4°C | 12 mph19 km/h Northwest | Partly Cloudy | |
| 4pm | 37°F3°C | 11 mph17 km/h Northwest | Mostly Clear | |
| 5pm | 34°F1°C | 8 mph13 km/h West | Mostly Clear | |
| 6pm | 32°F0°C | 8 mph12 km/h West | Mostly Clear | |
| 7pm | 31°F-1°C | 7 mph12 km/h West | Mostly Clear | |
| 8pm | 29°F-2°C | 7 mph12 km/h West | Mostly Clear | |
| 9pm | 28°F-2°C | 7 mph11 km/h West | Clear | |
| 10pm | 27°F-3°C | 7 mph11 km/h West | Clear | |
| 11pm | 26°F-3°C | 6 mph10 km/h West | Clear | |
| December 4 | ||||
| 12am | 26°F-3°C | 6 mph9 km/h West | Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| December 3 | 23°F-5°C | 39°F4°C | 9 mph15 km/h from Northwest | Mostly Clear | Mostly Clear |
| December 4 | 22°F-5°C | 39°F4°C | 11 mph17 km/h from South | Mostly Cloudy | Rain |
| December 5 | 27°F-3°C | 38°F4°C | 20 mph31 km/h from West | Windy | Mostly Clear |
| December 6 | 24°F-4°C | 34°F1°C | 13 mph20 km/h from Northwest | Mostly Clear | Partly Cloudy |
| December 7 | 22°F-6°C | 36°F2°C | 8 mph13 km/h from West | Partly Cloudy | Partly Cloudy |
| December 8 | 24°F-4°C | 50°F10°C | 7 mph12 km/h from Southwest | Mostly Clear | Partly Cloudy |
| December 9 | 31°F-1°C | 52°F11°C | 7 mph12 km/h from South | Rain | Rain |
Yes
Low of 22°F-6°C, High of 39°F4°CWind: 11 mph17 km/h
Precipitation: None