Yes

you do need a jacket based on the weather in Plumpton, Lewes BN7, UK 1 second ago

Why? Because this drizzle is just a polite way of saying, “Get ready, the big stuff's coming.” and the air feels like the cozy middle ground between summer and winter!
56°F13°C & Drizzle

Wind is 9 mph15 km/h from the Northeast, gusting to 18 mph29 km/h
September 22
2pm55°F13°C9 mph14 km/h NortheastMostly Clear
3pm52°F11°C8 mph13 km/h NorthMostly Clear
4pm50°F10°C8 mph12 km/h NorthClear
5pm48°F9°C7 mph12 km/h NorthClear
6pm47°F8°C7 mph11 km/h NorthClear
7pm46°F8°C6 mph10 km/h NorthClear
8pm45°F7°C7 mph11 km/h NorthClear
9pm44°F7°C7 mph12 km/h NorthClear
10pm44°F6°C7 mph12 km/h NorthClear
11pm43°F6°C7 mph12 km/h NorthClear
September 23
12am42°F6°C8 mph12 km/h NorthClear
1am42°F6°C8 mph13 km/h NorthMostly Clear
DateLowHighWindDayNight
September 2145°F7°C62°F16°C9 mph15 km/h from NorthMostly ClearClear
September 2242°F6°C60°F16°C11 mph18 km/h from NorthDrizzlePartly Cloudy
September 2348°F9°C61°F16°C13 mph21 km/h from NortheastMostly CloudyMostly Cloudy
September 2448°F9°C62°F17°C14 mph23 km/h from NortheastPartly CloudyPartly Cloudy
September 2547°F8°C60°F16°C7 mph11 km/h from SoutheastPartly CloudyPartly Cloudy
September 2652°F11°C60°F16°C8 mph13 km/h from SouthRainDrizzle
September 2753°F11°C61°F16°C8 mph13 km/h from NorthDrizzleMostly Clear

Yes

Low of 43°F6°C, High of 60°F16°C
Wind: 11 mph18 km/h
Precipitation: 53% rain

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