Yes

you do need a jacket based on the weather in Doncaster, UK 1 second ago

Why? Because it's not very warm out!
52°F11°C & Partly Cloudy

Wind is 9 mph15 km/h from the Southwest, gusting to 19 mph30 km/h
September 11
1am52°F11°C9 mph15 km/h SouthwestPartly Cloudy
2am52°F11°C10 mph16 km/h SouthwestPartly Cloudy
3am53°F12°C11 mph17 km/h SouthwestPartly Cloudy
4am56°F13°C12 mph19 km/h SouthwestPartly Cloudy
5am58°F14°C13 mph21 km/h SouthwestMostly Cloudy
6am60°F16°C14 mph22 km/h SouthwestMostly Cloudy
7am62°F16°C14 mph23 km/h SouthwestMostly Cloudy
8am62°F17°C14 mph22 km/h SouthwestMostly Cloudy
9am63°F17°C14 mph23 km/h SouthwestPartly Cloudy
10am63°F17°C13 mph21 km/h WestPartly Cloudy
11am62°F17°C13 mph20 km/h SouthwestPartly Cloudy
12pm60°F16°C12 mph19 km/h WestDrizzle
DateLowHighWindDayNight
September 1052°F11°C63°F17°C12 mph20 km/h from SouthwestDrizzleMostly Cloudy
September 1150°F10°C64°F18°C12 mph20 km/h from SouthwestDrizzleDrizzle
September 1251°F11°C63°F17°C12 mph19 km/h from SouthwestDrizzleDrizzle
September 1349°F10°C63°F17°C13 mph21 km/h from SouthRainDrizzle
September 1455°F13°C62°F17°C19 mph31 km/h from SouthwestDrizzleDrizzle
September 1553°F12°C62°F16°C16 mph26 km/h from WestDrizzlePartly Cloudy
September 1650°F10°C65°F18°C14 mph22 km/h from SouthwestDrizzleMostly Cloudy

Yes

Low of 50°F10°C, High of 64°F18°C
Wind: 12 mph20 km/h
Precipitation: 37% rain

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