No

you don't need a jacket based on the weather in Mechanicsburg, PA 17050, USA 1 second ago

80°F27°C & Clear

Wind is 7 mph11 km/h from the North, gusting to 11 mph18 km/h
September 11
5pm79°F26°C7 mph11 km/h NorthClear
6pm77°F25°C6 mph10 km/h NorthClear
7pm74°F23°C4 mph7 km/h NortheastClear
8pm70°F21°C4 mph7 km/h NortheastClear
9pm68°F20°C4 mph6 km/h NorthClear
10pm66°F19°C4 mph6 km/h NorthClear
11pm63°F17°C3 mph4 km/h NorthMostly Clear
September 12
12am62°F16°C3 mph4 km/h NorthClear
1am60°F16°C3 mph4 km/h NorthClear
2am59°F15°C3 mph5 km/h NorthwestClear
3am58°F14°C3 mph5 km/h NorthwestClear
4am57°F14°C3 mph5 km/h NorthwestClear
DateLowHighWindDayNight
September 1160°F16°C81°F27°C4 mph6 km/h from NorthMostly ClearClear
September 1255°F13°C79°F26°C3 mph5 km/h from NortheastMostly ClearMostly Clear
September 1356°F14°C82°F28°C3 mph5 km/h from SouthwestMostly ClearMostly Clear
September 1458°F14°C82°F28°C4 mph6 km/h from NorthMostly ClearMostly Clear
September 1561°F16°C83°F28°C3 mph5 km/h from EastPartly CloudyPartly Cloudy
September 1662°F17°C82°F28°C4 mph6 km/h from EastMostly CloudyMostly Cloudy
September 1760°F16°C77°F25°C6 mph10 km/h from EastMostly CloudyMostly Cloudy

Yes

Low of 55°F13°C, High of 80°F27°C
Wind: 3 mph5 km/h
Precipitation: None

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