Yes

you do need a jacket based on the weather in Philadelphia, PA 19148, USA 1 second ago

Why? Because it's so windy, your hat will probably launch into orbit!
66°F19°C & Cloudy

Wind is 12 mph20 km/h from the South, gusting to 30 mph49 km/h
October 20
3am67°F19°C14 mph22 km/h SouthCloudy
4am67°F20°C14 mph22 km/h SouthCloudy
5am67°F19°C13 mph21 km/h SouthDrizzle
6am65°F18°C13 mph20 km/h SouthDrizzle
7am61°F16°C11 mph18 km/h WestDrizzle
8am59°F15°C8 mph12 km/h SouthwestDrizzle
9am57°F14°C10 mph16 km/h SouthwestMostly Cloudy
10am56°F13°C11 mph17 km/h SouthwestPartly Cloudy
11am54°F12°C11 mph18 km/h SouthwestMostly Clear
12pm53°F12°C11 mph18 km/h SouthwestPartly Cloudy
1pm54°F12°C13 mph20 km/h SouthwestMostly Cloudy
2pm56°F13°C14 mph22 km/h WestMostly Cloudy
DateLowHighWindDayNight
October 1951°F11°C76°F24°C7 mph11 km/h from SouthPartly CloudyDrizzle
October 2052°F11°C67°F20°C13 mph22 km/h from WestPartly CloudyClear
October 2146°F8°C70°F21°C8 mph13 km/h from SouthMostly ClearMostly Cloudy
October 2250°F10°C62°F17°C11 mph17 km/h from WestMostly ClearMostly Clear
October 2346°F8°C59°F15°C9 mph15 km/h from WestPartly CloudyClear
October 2442°F6°C60°F16°C7 mph11 km/h from NorthwestMostly ClearPartly Cloudy
October 2543°F6°C61°F16°C3 mph5 km/h from SouthwestMostly CloudyMostly Cloudy

Yes

Low of 53°F12°C, High of 67°F20°C
Wind: 13 mph22 km/h
Precipitation: None

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