Yes
you do need a jacket based on the weather in Lancaster, PA, USA 1 second ago
Why? Because it's bitterly cold.
38°F4°C & Clear
Wind is 2 mph4 km/h from the E, gusting to 4 mph7 km/h
| April 26 | ||||
| 4am | 38°F3°C | 3 mph5 km/h NE | Clear | |
| 5am | 37°F3°C | 4 mph6 km/h NE | Mostly Clear | |
| 6am | 36°F2°C | 3 mph5 km/h E | Mostly Clear | |
| 7am | 37°F3°C | 3 mph4 km/h E | Clear | |
| 8am | 42°F5°C | 3 mph5 km/h E | Clear | |
| 9am | 47°F8°C | 4 mph7 km/h E | Clear | |
| 10am | 52°F11°C | 5 mph8 km/h E | Clear | |
| 11am | 56°F13°C | 6 mph10 km/h SE | Clear | |
| 12pm | 59°F15°C | 7 mph11 km/h SE | Clear | |
| 1pm | 61°F16°C | 7 mph11 km/h SE | Clear | |
| 2pm | 63°F17°C | 7 mph11 km/h SE | Clear | |
| 3pm | 64°F18°C | 7 mph11 km/h SE | Mostly Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| April 26 | 36°F2°C | 65°F18°C | 6 mph10 km/h from SE | Clear | Partly Cloudy |
| April 27 | 39°F4°C | 61°F16°C | 9 mph15 km/h from S | Cloudy | Mostly Cloudy |
| April 28 | 47°F9°C | 82°F28°C | 5 mph9 km/h from SW | Partly Cloudy | Partly Cloudy |
| April 29 | 57°F14°C | 88°F31°C | 3 mph5 km/h from W | Partly Cloudy | Mostly Clear |
| April 30 | 59°F15°C | 83°F28°C | 6 mph10 km/h from S | Mostly Cloudy | Partly Cloudy |
| May 1 | 58°F15°C | 81°F27°C | 4 mph7 km/h from W | Mostly Clear | Partly Cloudy |
| May 2 | 57°F14°C | 82°F28°C | 8 mph12 km/h from SW | Mostly Clear | Partly Cloudy |
Yes
Low of 38°F4°C, High of 62°F17°CWind: 9 mph15 km/h
Precipitation: 21% rain