Yes

you do need a jacket based on the weather in Philadelphia, PA 19120, USA 1 second ago

Why? Because it's not very warm out and it's really really huffing out there!
51°F10°C & Windy

Wind is 17 mph27 km/h from the West, gusting to 35 mph57 km/h
October 31
4pm52°F11°C17 mph28 km/h WestWindy
5pm53°F11°C17 mph27 km/h WestWindy
6pm54°F12°C18 mph29 km/h WestWindy
7pm54°F12°C18 mph28 km/h WestWindy
8pm54°F12°C17 mph28 km/h WestWindy
9pm53°F11°C16 mph26 km/h WestWindy
10pm51°F11°C14 mph23 km/h WestClear
11pm51°F10°C14 mph23 km/h WestClear
November 1
12am50°F10°C15 mph24 km/h WestMostly Clear
1am49°F9°C14 mph23 km/h WestClear
2am48°F9°C14 mph23 km/h WestMostly Clear
3am48°F9°C14 mph22 km/h WestMostly Clear
DateLowHighWindDayNight
October 3148°F9°C54°F12°C15 mph24 km/h from WestWindyMostly Clear
November 145°F7°C57°F14°C10 mph15 km/h from WestPartly CloudyPartly Cloudy
November 241°F5°C58°F15°C2 mph4 km/h from SouthwestMostly ClearPartly Cloudy
November 344°F7°C57°F14°C4 mph7 km/h from SouthRainRain
November 444°F7°C57°F14°C12 mph19 km/h from NorthwestMostly ClearMostly Clear
November 541°F5°C59°F15°C8 mph12 km/h from SouthPartly CloudyPartly Cloudy
November 641°F5°C54°F12°C14 mph22 km/h from NorthwestMostly ClearClear

Yes

Low of 46°F8°C, High of 57°F14°C
Wind: 10 mph15 km/h
Precipitation: None

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