Yes

you do need a jacket based on the weather in London WC1E 6BT, UK 1 second ago

Why? Because too cold for just a hoodie, too warm for a parka!
49°F9°C & Cloudy

Wind is 6 mph9 km/h from the South, gusting to 15 mph24 km/h
November 30
1am49°F10°C6 mph9 km/h SouthCloudy
2am50°F10°C6 mph9 km/h SouthCloudy
3am51°F11°C6 mph9 km/h SouthCloudy
4am52°F11°C6 mph9 km/h SouthCloudy
5am53°F12°C6 mph10 km/h SouthCloudy
6am55°F13°C6 mph10 km/h SouthCloudy
7am56°F13°C6 mph10 km/h SouthwestCloudy
8am57°F14°C6 mph10 km/h SouthMostly Cloudy
9am57°F14°C6 mph10 km/h SouthMostly Cloudy
10am56°F14°C7 mph11 km/h SouthMostly Cloudy
11am55°F13°C7 mph11 km/h SouthCloudy
12pm55°F13°C7 mph11 km/h SouthCloudy
DateLowHighWindDayNight
November 2946°F8°C57°F14°C6 mph10 km/h from SouthCloudyCloudy
November 3050°F10°C57°F14°C9 mph15 km/h from SouthDrizzleMostly Cloudy
December 140°F4°C52°F11°C9 mph14 km/h from NorthwestMostly CloudyPartly Cloudy
December 235°F2°C43°F6°C3 mph5 km/h from SouthDrizzleDrizzle
December 340°F4°C47°F8°C4 mph7 km/h from NorthwestPartly CloudyRain
December 442°F5°C52°F11°C12 mph19 km/h from SouthwestRainCloudy
December 547°F8°C52°F11°C12 mph19 km/h from WestPartly CloudyMostly Cloudy

Yes

Low of 50°F10°C, High of 56°F14°C
Wind: 9 mph15 km/h
Precipitation: 50% rain

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