No

you don't need a jacket based on the weather in Hummelstown, PA 17036, USA 1 second ago

83°F28°C & Partly Cloudy

Wind is 7 mph12 km/h from the North, gusting to 12 mph20 km/h
July 21
4pm83°F28°C8 mph12 km/h NorthClear
5pm82°F28°C7 mph11 km/h NorthMostly Clear
6pm82°F28°C6 mph10 km/h NorthMostly Clear
7pm80°F27°C5 mph8 km/h NortheastMostly Clear
8pm77°F25°C4 mph6 km/h NortheastClear
9pm74°F23°C4 mph6 km/h NortheastClear
10pm71°F22°C4 mph7 km/h NortheastMostly Clear
11pm69°F21°C6 mph10 km/h NortheastPartly Cloudy
July 22
12am68°F20°C6 mph10 km/h NortheastPartly Cloudy
1am66°F19°C6 mph9 km/h NortheastPartly Cloudy
2am64°F18°C5 mph8 km/h NortheastMostly Clear
3am63°F17°C4 mph7 km/h NortheastMostly Clear
DateLowHighWindDayNight
July 2167°F20°C83°F28°C6 mph10 km/h from NorthClearMostly Clear
July 2261°F16°C81°F27°C3 mph5 km/h from NortheastMostly ClearMostly Clear
July 2363°F17°C85°F30°C4 mph7 km/h from SouthPartly CloudyMostly Clear
July 2467°F19°C90°F32°C7 mph11 km/h from SouthwestMostly ClearClear
July 2571°F22°C92°F33°C5 mph8 km/h from SouthwestPartly CloudyMostly Cloudy
July 2674°F24°C88°F31°C3 mph5 km/h from WestDrizzleDrizzle
July 2772°F22°C86°F30°C3 mph5 km/h from EastDrizzlePartly Cloudy

No

Low of 61°F16°C, High of 81°F27°C
Wind: 3 mph5 km/h
Precipitation: None

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