Yes

you do need a jacket based on the weather in London E13 0RU, UK 1 second ago

Why? Because just cool enough for a jacket, but not warm enough to ditch it!
58°F14°C & Mostly Clear

Wind is 6 mph9 km/h from the Southwest, gusting to 13 mph21 km/h
September 8
1am58°F14°C6 mph9 km/h SouthwestMostly Clear
2am57°F14°C6 mph9 km/h SouthwestMostly Clear
3am58°F15°C6 mph10 km/h SouthwestMostly Clear
4am60°F16°C7 mph11 km/h SouthwestMostly Clear
5am63°F17°C7 mph11 km/h SouthwestMostly Clear
6am65°F18°C8 mph13 km/h SouthwestMostly Clear
7am67°F20°C9 mph14 km/h SouthwestMostly Clear
8am69°F20°C9 mph14 km/h SouthwestMostly Clear
9am70°F21°C9 mph14 km/h SouthwestMostly Clear
10am70°F21°C9 mph14 km/h SouthwestPartly Cloudy
11am70°F21°C8 mph14 km/h SouthwestPartly Cloudy
12pm69°F21°C8 mph14 km/h SouthwestPartly Cloudy
DateLowHighWindDayNight
September 757°F14°C70°F21°C8 mph13 km/h from SouthwestMostly ClearMostly Clear
September 853°F12°C69°F20°C6 mph9 km/h from SouthPartly CloudyMostly Cloudy
September 956°F14°C67°F19°C10 mph17 km/h from SouthDrizzleDrizzle
September 1054°F12°C65°F18°C12 mph19 km/h from SouthwestRainDrizzle
September 1151°F10°C65°F18°C11 mph17 km/h from SouthwestDrizzlePartly Cloudy
September 1250°F10°C63°F17°C10 mph17 km/h from SouthwestDrizzleRain
September 1354°F12°C65°F18°C10 mph17 km/h from SouthRainRain

Yes

Low of 54°F12°C, High of 69°F21°C
Wind: 6 mph9 km/h
Precipitation: 17% rain

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