Yes

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

Why? Because it's cool. Pleasantly cool, but cool and it's fairly windy outside!
52°F11°C & Cloudy

Wind is 11 mph17 km/h from the North, gusting to 22 mph36 km/h
May 4
8am52°F11°C11 mph17 km/h NorthCloudy
9am53°F11°C12 mph20 km/h NorthMostly Cloudy
10am53°F12°C12 mph19 km/h NorthMostly Cloudy
11am52°F11°C12 mph20 km/h NorthMostly Cloudy
12pm52°F11°C13 mph20 km/h NorthMostly Cloudy
1pm51°F11°C13 mph20 km/h NorthMostly Cloudy
2pm50°F10°C12 mph20 km/h NorthMostly Cloudy
3pm48°F9°C12 mph19 km/h NorthPartly Cloudy
4pm46°F8°C13 mph20 km/h NorthMostly Cloudy
5pm45°F7°C11 mph17 km/h NorthPartly Cloudy
6pm44°F6°C10 mph16 km/h NorthMostly Cloudy
7pm43°F6°C9 mph14 km/h NorthMostly Cloudy
DateLowHighWindDayNight
May 343°F6°C53°F12°C11 mph17 km/h from NortheastMostly CloudyMostly Cloudy
May 442°F6°C55°F13°C11 mph17 km/h from NortheastMostly CloudyPartly Cloudy
May 539°F4°C60°F16°C5 mph8 km/h from NortheastPartly CloudyPartly Cloudy
May 642°F6°C59°F15°C7 mph11 km/h from NortheastMostly CloudyMostly Cloudy
May 743°F6°C60°F15°C10 mph16 km/h from NortheastMostly CloudyMostly Clear
May 843°F6°C66°F19°C7 mph11 km/h from EastMostly ClearMostly Clear
May 945°F7°C68°F20°C6 mph10 km/h from EastMostly ClearMostly Clear

Yes

Low of 42°F6°C, High of 55°F13°C
Wind: 11 mph17 km/h
Precipitation: None

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