Yes

you do need a jacket based on the weather in London, UK 31 seconds ago

Why? Because it's cool. Pleasantly cool, but cool and it's really really huffing out there!
57°F14°C & Partly Cloudy

Wind is 14 mph22 km/h from the Southwest, gusting to 32 mph51 km/h
November 1
12pm58°F14°C14 mph22 km/h SouthwestPartly Cloudy
1pm58°F15°C13 mph22 km/h SouthwestMostly Clear
2pm58°F14°C12 mph20 km/h SouthwestPartly Cloudy
3pm57°F14°C11 mph18 km/h SouthwestMostly Cloudy
4pm55°F13°C10 mph16 km/h SouthwestCloudy
5pm54°F12°C9 mph14 km/h SouthwestDrizzle
6pm53°F12°C8 mph13 km/h SouthwestPartly Cloudy
7pm51°F11°C8 mph13 km/h SouthwestCloudy
8pm51°F10°C8 mph12 km/h SouthwestCloudy
9pm50°F10°C7 mph12 km/h SouthwestCloudy
10pm49°F10°C7 mph12 km/h SouthwestMostly Cloudy
11pm48°F9°C7 mph11 km/h SouthwestMostly Clear
DateLowHighWindDayNight
November 147°F9°C60°F16°C10 mph17 km/h from SouthwestRainRain
November 246°F8°C53°F12°C9 mph14 km/h from WestDrizzleDrizzle
November 348°F9°C61°F16°C12 mph19 km/h from SouthwestMostly CloudyCloudy
November 454°F12°C59°F15°C10 mph16 km/h from SouthDrizzleDrizzle
November 556°F13°C61°F16°C9 mph14 km/h from SouthDrizzleCloudy
November 650°F10°C58°F14°C11 mph18 km/h from SouthwestMostly CloudyMostly Cloudy
November 749°F10°C58°F14°C11 mph17 km/h from SouthRainRain

Yes

Low of 46°F8°C, High of 54°F12°C
Wind: 9 mph14 km/h
Precipitation: 64% rain

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