Yes

you do need a jacket based on the weather in Clapham Common, London, UK 1 second ago

Why? Because sorry, it's too cool for just a hoodie!
53°F12°C & Partly Cloudy

Wind is 5 mph8 km/h from the Southwest, gusting to 11 mph18 km/h
June 9
2am53°F12°C5 mph8 km/h SouthwestPartly Cloudy
3am56°F13°C6 mph9 km/h WestPartly Cloudy
4am59°F15°C6 mph10 km/h WestMostly Cloudy
5am61°F16°C7 mph11 km/h SouthwestMostly Cloudy
6am63°F17°C8 mph12 km/h SouthwestMostly Cloudy
7am64°F18°C8 mph13 km/h SouthwestMostly Cloudy
8am66°F19°C9 mph15 km/h SouthwestMostly Cloudy
9am67°F19°C9 mph15 km/h SouthwestMostly Cloudy
10am67°F19°C10 mph16 km/h SouthwestCloudy
11am67°F20°C10 mph16 km/h SouthwestCloudy
12pm67°F19°C10 mph16 km/h SouthwestCloudy
1pm66°F19°C10 mph16 km/h SouthwestCloudy
DateLowHighWindDayNight
June 852°F11°C67°F20°C8 mph13 km/h from SouthwestMostly CloudyCloudy
June 956°F13°C70°F21°C9 mph15 km/h from WestCloudyPartly Cloudy
June 1056°F13°C76°F25°C7 mph12 km/h from SoutheastPartly CloudyMostly Cloudy
June 1160°F16°C76°F24°C9 mph14 km/h from SouthDrizzleMostly Clear
June 1258°F15°C81°F27°C7 mph11 km/h from SoutheastMostly ClearDrizzle
June 1359°F15°C73°F23°C8 mph13 km/h from SouthwestMostly CloudyMostly Clear
June 1455°F13°C70°F21°C9 mph14 km/h from WestPartly CloudyMostly Clear

Yes

Low of 55°F13°C, High of 71°F22°C
Wind: 9 mph15 km/h
Precipitation: 6% rain

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