No

you don't need a jacket based on the weather in Grays, UK 1 second ago

65°F19°C & Mostly Cloudy

Wind is 6 mph10 km/h from the Southwest, gusting to 13 mph21 km/h
September 19
6pm64°F18°C6 mph10 km/h SouthwestCloudy
7pm64°F18°C5 mph8 km/h SouthwestMostly Cloudy
8pm63°F17°C5 mph8 km/h SouthwestPartly Cloudy
9pm62°F17°C5 mph8 km/h SouthwestMostly Clear
10pm61°F16°C4 mph7 km/h SouthwestPartly Cloudy
11pm60°F16°C5 mph8 km/h SouthwestPartly Cloudy
September 20
12am59°F15°C5 mph8 km/h SouthwestMostly Cloudy
1am59°F15°C5 mph7 km/h SouthwestCloudy
2am59°F15°C4 mph7 km/h SouthwestCloudy
3am60°F16°C5 mph8 km/h SouthCloudy
4am63°F17°C6 mph10 km/h SouthwestCloudy
5am65°F18°C8 mph13 km/h SouthwestCloudy
DateLowHighWindDayNight
September 1860°F16°C80°F27°C6 mph10 km/h from SouthMostly ClearPartly Cloudy
September 1956°F14°C72°F22°C12 mph19 km/h from SouthwestDrizzleMostly Clear
September 2048°F9°C60°F15°C9 mph14 km/h from NorthPartly CloudyMostly Clear
September 2145°F7°C62°F17°C11 mph18 km/h from NorthMostly ClearMostly Clear
September 2243°F6°C62°F16°C8 mph12 km/h from NorthPartly CloudyPartly Cloudy
September 2346°F8°C62°F17°C8 mph12 km/h from NortheastMostly CloudyMostly Cloudy
September 2448°F9°C61°F16°C9 mph14 km/h from NortheastPartly CloudyPartly Cloudy

Yes

Low of 56°F14°C, High of 72°F22°C
Wind: 12 mph19 km/h
Precipitation: 32% rain

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