Yes

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

Why? Because it's cool. Pleasantly cool, but cool and it's so windy, your hat has officially retired from your head!
56°F14°C & Clear

Wind is 8 mph13 km/h from the Northwest, gusting to 19 mph31 km/h
November 8
3pm58°F14°C9 mph14 km/h NorthwestClear
4pm60°F15°C8 mph13 km/h NorthwestClear
5pm61°F16°C8 mph12 km/h NorthwestClear
6pm62°F17°C6 mph10 km/h NorthwestClear
7pm63°F17°C6 mph10 km/h NorthwestClear
8pm62°F17°C6 mph10 km/h NorthwestMostly Clear
9pm61°F16°C4 mph6 km/h NorthwestMostly Clear
10pm58°F14°C2 mph3 km/h NorthMostly Cloudy
11pm55°F13°C3 mph4 km/h SoutheastMostly Cloudy
November 9
12am54°F12°C4 mph6 km/h SoutheastCloudy
1am53°F12°C4 mph7 km/h SoutheastMostly Cloudy
2am52°F11°C4 mph7 km/h SoutheastMostly Cloudy
DateLowHighWindDayNight
November 849°F9°C63°F17°C5 mph9 km/h from NorthwestMostly ClearMostly Cloudy
November 948°F9°C61°F16°C6 mph10 km/h from SoutheastDrizzleDrizzle
November 1031°F-0°C50°F10°C9 mph15 km/h from NorthwestMostly CloudyPartly Cloudy
November 1128°F-2°C42°F6°C14 mph22 km/h from WestPartly CloudyPartly Cloudy
November 1233°F0°C51°F10°C10 mph16 km/h from SouthwestMostly CloudyPartly Cloudy
November 1337°F3°C48°F9°C12 mph19 km/h from WestPartly CloudyPartly Cloudy
November 1434°F1°C49°F9°C9 mph14 km/h from WestPartly CloudyMostly Clear

Yes

Low of 48°F9°C, High of 61°F16°C
Wind: 6 mph10 km/h
Precipitation: 65% rain

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