Yes

you do need a jacket based on the weather in Bethel Park, PA, USA 1 second ago

Why? Because it's not very warm out and it's on the windy side!
56°F13°C & Clear

Wind is 11 mph17 km/h from the West, gusting to 21 mph33 km/h
November 4
6pm57°F14°C11 mph18 km/h WestClear
7pm57°F14°C11 mph18 km/h WestMostly Clear
8pm57°F14°C10 mph16 km/h WestPartly Cloudy
9pm55°F13°C9 mph14 km/h WestMostly Cloudy
10pm52°F11°C6 mph10 km/h WestMostly Cloudy
11pm49°F9°C5 mph8 km/h SouthwestPartly Cloudy
November 5
12am46°F8°C5 mph8 km/h SouthwestMostly Clear
1am45°F7°C4 mph7 km/h SouthwestMostly Clear
2am44°F6°C4 mph7 km/h SouthwestClear
3am43°F6°C4 mph7 km/h SouthwestMostly Clear
4am42°F6°C4 mph7 km/h SouthMostly Clear
5am41°F5°C4 mph7 km/h SouthMostly Clear
DateLowHighWindDayNight
November 438°F4°C57°F14°C7 mph11 km/h from WestMostly ClearMostly Clear
November 540°F4°C61°F16°C14 mph23 km/h from SouthwestPartly CloudyPartly Cloudy
November 637°F3°C50°F10°C6 mph10 km/h from NorthwestMostly ClearPartly Cloudy
November 736°F2°C61°F16°C11 mph17 km/h from SouthwestRainRain
November 845°F7°C54°F12°C6 mph9 km/h from WestMostly CloudyMostly Cloudy
November 937°F3°C51°F11°C8 mph13 km/h from SouthwestDrizzleDrizzle
November 1030°F-1°C37°F3°C10 mph16 km/h from NorthwestMostly CloudyPartly Cloudy

Yes

Low of 40°F5°C, High of 62°F17°C
Wind: 14 mph23 km/h
Precipitation: None

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