Yes

you do need a jacket based on the weather in Norristown, PA 19403, USA 1 second ago

Why? Because it's quite chilly!
40°F5°C & Partly Cloudy

Wind is 2 mph3 km/h from the Northwest, gusting to 3 mph5 km/h
November 2
9am40°F4°C2 mph3 km/h NorthwestPartly Cloudy
10am39°F4°C3 mph4 km/h NorthMostly Clear
11am39°F4°C2 mph3 km/h NorthMostly Clear
12pm40°F4°C2 mph3 km/h NorthMostly Clear
1pm43°F6°C1 mph2 km/h NorthMostly Clear
2pm48°F9°C2 mph3 km/h EastMostly Clear
3pm53°F12°C2 mph3 km/h EastMostly Clear
4pm57°F14°C1 mph2 km/h EastMostly Clear
5pm59°F15°C2 mph3 km/h SouthMostly Clear
6pm61°F16°C2 mph4 km/h SouthMostly Clear
7pm61°F16°C3 mph4 km/h SouthwestMostly Clear
8pm61°F16°C2 mph4 km/h SouthwestMostly Clear
DateLowHighWindDayNight
November 238°F3°C62°F16°C2 mph3 km/h from SouthMostly ClearMostly Cloudy
November 344°F7°C62°F17°C5 mph8 km/h from SouthwestPartly CloudyClear
November 443°F6°C58°F15°C10 mph16 km/h from WestMostly ClearMostly Clear
November 541°F5°C63°F17°C8 mph12 km/h from SouthwestPartly CloudyMostly Clear
November 641°F5°C57°F14°C9 mph14 km/h from NorthwestMostly ClearPartly Cloudy
November 739°F4°C64°F18°C10 mph16 km/h from SouthMostly CloudyDrizzle
November 843°F6°C61°F16°C11 mph17 km/h from WestDrizzlePartly Cloudy

Yes

Low of 44°F7°C, High of 62°F17°C
Wind: 5 mph8 km/h
Precipitation: None

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