Yes

you do need a jacket based on the weather in Hendon Way, London NW2 2NG, UK 1 second ago

Why? Because it's cool. Pleasantly cool, but cool!
53°F12°C & Cloudy

Wind is 4 mph7 km/h from the Northeast, gusting to 11 mph17 km/h
October 13
6am53°F12°C5 mph8 km/h NortheastCloudy
7am54°F12°C5 mph8 km/h NortheastCloudy
8am55°F13°C6 mph9 km/h NortheastCloudy
9am56°F13°C6 mph10 km/h NortheastMostly Cloudy
10am58°F14°C7 mph11 km/h NortheastMostly Cloudy
11am60°F15°C7 mph12 km/h NortheastCloudy
12pm61°F16°C8 mph12 km/h NortheastCloudy
1pm62°F17°C8 mph12 km/h NortheastCloudy
2pm64°F18°C8 mph12 km/h NortheastCloudy
3pm63°F17°C8 mph13 km/h NortheastCloudy
4pm62°F17°C7 mph12 km/h NortheastCloudy
5pm61°F16°C7 mph11 km/h NortheastCloudy
DateLowHighWindDayNight
October 1253°F12°C64°F18°C7 mph11 km/h from NortheastCloudyMostly Cloudy
October 1351°F11°C62°F17°C7 mph11 km/h from NortheastCloudyMostly Cloudy
October 1449°F9°C60°F16°C6 mph10 km/h from NortheastMostly CloudyMostly Cloudy
October 1550°F10°C59°F15°C5 mph8 km/h from NortheastMostly CloudyMostly Cloudy
October 1649°F9°C59°F15°C4 mph6 km/h from EastMostly CloudyMostly Cloudy
October 1749°F9°C59°F15°C8 mph12 km/h from SoutheastCloudyCloudy
October 1852°F11°C60°F16°C8 mph13 km/h from SoutheastDrizzleDrizzle

Yes

Low of 51°F11°C, High of 62°F17°C
Wind: 7 mph11 km/h
Precipitation: None

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