Yes

you do need a jacket based on the weather in London, UK 4 minutes ago

Why? Because a jacket will keep you cozy, but you won't break a seat!
57°F14°C & Mostly Clear

Wind is 6 mph9 km/h from the Southwest, gusting to 13 mph21 km/h
June 15
12am57°F14°C5 mph9 km/h SouthwestClear
1am57°F14°C6 mph9 km/h SouthwestClear
2am58°F15°C7 mph11 km/h SouthwestMostly Clear
3am61°F16°C8 mph12 km/h WestPartly Cloudy
4am63°F17°C8 mph13 km/h WestPartly Cloudy
5am65°F19°C8 mph13 km/h WestMostly Cloudy
6am68°F20°C8 mph13 km/h WestPartly Cloudy
7am70°F21°C9 mph14 km/h WestPartly Cloudy
8am72°F22°C9 mph15 km/h WestPartly Cloudy
9am73°F23°C9 mph15 km/h WestPartly Cloudy
10am75°F24°C10 mph16 km/h WestPartly Cloudy
11am75°F24°C11 mph17 km/h WestPartly Cloudy
DateLowHighWindDayNight
June 1457°F14°C75°F24°C9 mph15 km/h from WestPartly CloudyClear
June 1559°F15°C78°F26°C4 mph6 km/h from WestMostly ClearMostly Clear
June 1662°F16°C79°F26°C6 mph10 km/h from WestPartly CloudyPartly Cloudy
June 1762°F16°C79°F26°C5 mph8 km/h from NorthwestPartly CloudyClear
June 1861°F16°C81°F27°C8 mph12 km/h from EastMostly ClearPartly Cloudy
June 1962°F17°C85°F29°C7 mph11 km/h from SoutheastPartly CloudyPartly Cloudy
June 2063°F17°C82°F28°C5 mph8 km/h from NortheastPartly CloudyPartly Cloudy

No

Low of 59°F15°C, High of 79°F26°C
Wind: 4 mph6 km/h
Precipitation: None

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