Yes

you do need a jacket based on the weather in Theale, Reading, UK 1 second ago

Why? Because too cold for just a hoodie, too warm for a parka!
40°F4°C & Mostly Cloudy

Wind is 6 mph9 km/h from the Southwest, gusting to 11 mph18 km/h
December 13
6pm39°F4°C6 mph9 km/h WestMostly Cloudy
7pm39°F4°C5 mph8 km/h WestMostly Cloudy
8pm38°F3°C5 mph8 km/h WestMostly Cloudy
9pm38°F3°C5 mph8 km/h WestMostly Cloudy
10pm38°F3°C5 mph8 km/h WestMostly Cloudy
11pm38°F3°C5 mph8 km/h WestCloudy
December 14
12am39°F4°C6 mph9 km/h WestCloudy
1am39°F4°C6 mph9 km/h WestCloudy
2am40°F4°C6 mph10 km/h WestCloudy
3am40°F5°C8 mph12 km/h WestCloudy
4am41°F5°C8 mph14 km/h NorthwestCloudy
5am42°F5°C9 mph15 km/h NorthwestMostly Cloudy
DateLowHighWindDayNight
December 1239°F4°C44°F7°C3 mph4 km/h from SoutheastCloudyMostly Cloudy
December 1338°F3°C45°F7°C9 mph14 km/h from NorthwestMostly CloudyMostly Cloudy
December 1438°F3°C54°F12°C11 mph19 km/h from WestMostly CloudyCloudy
December 1546°F8°C51°F11°C11 mph18 km/h from SouthwestMostly CloudyMostly Cloudy
December 1644°F6°C50°F10°C10 mph17 km/h from SouthCloudyWindy
December 1750°F10°C56°F14°C18 mph29 km/h from SouthwestDrizzleDrizzle
December 1837°F3°C51°F11°C18 mph29 km/h from WestDrizzlePartly Cloudy

Yes

Low of 37°F3°C, High of 45°F7°C
Wind: 9 mph14 km/h
Precipitation: None

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