Yes

you do need a jacket based on the weather in Cheam, Sutton, UK 7 minutes ago

Why? Because a jacket will keep you cozy, but you won't break a seat!
52°F11°C & Mostly Clear

Wind is 9 mph14 km/h from the Southwest, gusting to 19 mph30 km/h
September 12
2am51°F11°C8 mph14 km/h SouthwestMostly Clear
3am53°F12°C9 mph14 km/h SouthwestMostly Clear
4am55°F13°C10 mph17 km/h SouthwestMostly Clear
5am58°F14°C12 mph20 km/h SouthwestMostly Clear
6am60°F16°C13 mph21 km/h SouthwestPartly Cloudy
7am62°F16°C13 mph22 km/h SouthwestPartly Cloudy
8am62°F17°C13 mph21 km/h SouthwestPartly Cloudy
9am63°F17°C13 mph21 km/h SouthwestPartly Cloudy
10am62°F17°C13 mph21 km/h SouthwestDrizzle
11am62°F17°C13 mph20 km/h SouthwestPartly Cloudy
12pm61°F16°C12 mph20 km/h SouthwestMostly Cloudy
1pm60°F16°C10 mph17 km/h SouthwestMostly Clear
DateLowHighWindDayNight
September 1151°F11°C63°F17°C12 mph19 km/h from SouthwestDrizzleDrizzle
September 1252°F11°C63°F17°C11 mph18 km/h from SouthwestDrizzleMostly Clear
September 1349°F9°C66°F19°C11 mph18 km/h from SouthRainDrizzle
September 1455°F13°C65°F18°C19 mph31 km/h from SouthwestWindyPartly Cloudy
September 1553°F12°C64°F18°C13 mph21 km/h from WestMostly CloudyCloudy
September 1652°F11°C64°F18°C13 mph22 km/h from SouthwestDrizzleMostly Cloudy
September 1753°F12°C65°F18°C11 mph18 km/h from WestMostly CloudyMostly Cloudy

Yes

Low of 53°F12°C, High of 63°F17°C
Wind: 11 mph18 km/h
Precipitation: 68% rain

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