Yes

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

Why? Because it's quite chilly!
48°F9°C & Partly Cloudy

Wind is 2 mph4 km/h from the East, gusting to 7 mph11 km/h
September 27
12am48°F9°C3 mph5 km/h EastPartly Cloudy
1am48°F9°C3 mph5 km/h EastMostly Clear
2am48°F9°C3 mph5 km/h SoutheastPartly Cloudy
3am50°F10°C4 mph6 km/h SoutheastMostly Cloudy
4am53°F12°C5 mph8 km/h SoutheastMostly Cloudy
5am56°F14°C6 mph10 km/h SoutheastMostly Cloudy
6am59°F15°C9 mph14 km/h SouthMostly Cloudy
7am61°F16°C9 mph15 km/h SouthMostly Cloudy
8am62°F17°C10 mph16 km/h SouthCloudy
9am63°F17°C10 mph16 km/h SouthCloudy
10am63°F17°C10 mph16 km/h SouthCloudy
11am63°F17°C9 mph15 km/h SouthMostly Cloudy
DateLowHighWindDayNight
September 2648°F9°C63°F17°C8 mph13 km/h from SouthMostly CloudyMostly Cloudy
September 2751°F11°C64°F18°C5 mph7 km/h from WestDrizzleMostly Clear
September 2845°F7°C64°F18°C2 mph4 km/h from NorthwestMostly CloudyMostly Cloudy
September 2946°F8°C65°F18°C2 mph3 km/h from WestPartly CloudyPartly Cloudy
September 3047°F8°C65°F18°C4 mph6 km/h from SouthPartly CloudyMostly Cloudy
October 152°F11°C67°F19°C8 mph12 km/h from SouthMostly CloudyCloudy
October 254°F12°C64°F18°C9 mph15 km/h from SouthwestDrizzleCloudy

Yes

Low of 52°F11°C, High of 64°F18°C
Wind: 5 mph7 km/h
Precipitation: 31% rain

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