Yes

you do need a jacket based on the weather in Norristown, PA 19401, USA 1 second ago

Why? Because there are strong winds blowing out there!
67°F20°C & Clear

Wind is 12 mph20 km/h from the West, gusting to 27 mph44 km/h
November 8
2pm68°F20°C13 mph21 km/h WestClear
3pm67°F20°C14 mph22 km/h WestClear
4pm66°F19°C12 mph20 km/h WestClear
5pm63°F17°C11 mph17 km/h WestClear
6pm61°F16°C10 mph17 km/h WestClear
7pm59°F15°C11 mph18 km/h NorthwestClear
8pm58°F14°C11 mph18 km/h NorthwestClear
9pm56°F13°C12 mph19 km/h NorthwestClear
10pm53°F12°C10 mph17 km/h NorthwestClear
11pm52°F11°C9 mph14 km/h NorthwestMostly Clear
November 9
12am50°F10°C9 mph14 km/h NorthwestMostly Clear
1am49°F9°C10 mph15 km/h NorthwestMostly Clear
DateLowHighWindDayNight
November 841°F5°C68°F20°C9 mph14 km/h from WestClearMostly Clear
November 940°F4°C56°F14°C6 mph10 km/h from NorthClearPartly Cloudy
November 1036°F2°C60°F16°C7 mph11 km/h from SouthRainRain
November 1151°F11°C65°F19°C9 mph15 km/h from WestMostly ClearMostly Clear
November 1239°F4°C58°F15°C9 mph15 km/h from NorthMostly ClearClear
November 1335°F2°C53°F12°C5 mph8 km/h from NortheastPartly CloudyMostly Cloudy
November 1441°F5°C56°F13°C9 mph15 km/h from NorthwestRainRain

Yes

Low of 40°F5°C, High of 56°F14°C
Wind: 6 mph10 km/h
Precipitation: None

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