Yes

you do need a jacket based on the weather in Bangor LL57, UK 1 second ago

Why? Because some drizzle out there and it's quite chilly!
44°F7°C & Drizzle

Wind is 6 mph10 km/h from the Southeast, gusting to 11 mph18 km/h
November 28
11am44°F7°C6 mph10 km/h SoutheastCloudy
12pm44°F7°C6 mph10 km/h SoutheastCloudy
1pm45°F7°C7 mph11 km/h SoutheastCloudy
2pm46°F8°C8 mph12 km/h SoutheastCloudy
3pm47°F8°C8 mph14 km/h SouthMostly Cloudy
4pm48°F9°C9 mph15 km/h SouthMostly Cloudy
5pm49°F9°C10 mph16 km/h SouthMostly Cloudy
6pm50°F10°C10 mph17 km/h SouthMostly Cloudy
7pm50°F10°C10 mph17 km/h SouthMostly Cloudy
8pm51°F10°C10 mph16 km/h SouthMostly Cloudy
9pm51°F10°C10 mph16 km/h SouthMostly Cloudy
10pm50°F10°C9 mph15 km/h SouthMostly Cloudy
DateLowHighWindDayNight
November 2734°F1°C50°F10°C6 mph9 km/h from SoutheastMostly CloudyMostly Cloudy
November 2850°F10°C56°F13°C13 mph21 km/h from SouthMostly CloudyWindy
November 2953°F12°C56°F13°C17 mph28 km/h from SouthWindyRain
November 3048°F9°C55°F13°C15 mph24 km/h from SouthwestDrizzleDrizzle
December 140°F5°C48°F9°C13 mph21 km/h from NorthMostly CloudyMostly Cloudy
December 237°F3°C44°F7°C7 mph12 km/h from SoutheastCloudyRain
December 340°F4°C47°F8°C7 mph11 km/h from SouthPartly CloudyWindy

Yes

Low of 50°F10°C, High of 55°F13°C
Wind: 13 mph21 km/h
Precipitation: None

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