Yes

you do need a jacket based on the weather in (Marylebone), England, United Kingdom 1 second ago

Why? Because a jacket will keep you cozy, but you won't break a seat and the wind makes walking forward feel like moonwalking in reverse!
50°F10°C & Cloudy

Wind is 11 mph18 km/h from the West, gusting to 25 mph41 km/h
October 26
3pm50°F10°C12 mph19 km/h WestCloudy
4pm49°F10°C11 mph18 km/h WestCloudy
5pm49°F9°C11 mph18 km/h WestCloudy
6pm48°F9°C11 mph18 km/h SouthwestDrizzle
7pm49°F9°C12 mph20 km/h SouthwestCloudy
8pm50°F10°C13 mph20 km/h SouthwestCloudy
9pm51°F10°C12 mph20 km/h WestCloudy
10pm51°F11°C12 mph19 km/h WestCloudy
11pm52°F11°C12 mph19 km/h WestCloudy
October 27
12am52°F11°C12 mph19 km/h WestCloudy
1am52°F11°C12 mph19 km/h WestCloudy
2am51°F11°C12 mph19 km/h WestMostly Cloudy
DateLowHighWindDayNight
October 2540°F4°C52°F11°C9 mph14 km/h from WestDrizzleMostly Cloudy
October 2748°F9°C57°F14°C13 mph20 km/h from WestPartly CloudyCloudy
October 2849°F9°C58°F15°C11 mph17 km/h from WestDrizzleDrizzle
October 2949°F9°C58°F15°C8 mph13 km/h from SouthwestDrizzleMostly Cloudy
October 3044°F7°C59°F15°C8 mph13 km/h from SoutheastDrizzleRain
October 3153°F12°C61°F16°C10 mph16 km/h from SouthwestPartly CloudyDrizzle
November 150°F10°C59°F15°C10 mph16 km/h from SouthwestDrizzleDrizzle

Yes

Low of 48°F9°C, High of 56°F14°C
Wind: 13 mph20 km/h
Precipitation: None

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