Yes

you do need a jacket based on the weather in Winchester SO21, UK 1 second ago

Why? Because the air feels like the cozy middle ground between summer and winter!
57°F14°C & Mostly Clear

Wind is 8 mph13 km/h from the Northeast, gusting to 17 mph28 km/h
May 8
4pm55°F13°C9 mph14 km/h NortheastMostly Clear
5pm52°F11°C9 mph14 km/h NortheastMostly Clear
6pm51°F10°C8 mph13 km/h NortheastMostly Clear
7pm49°F9°C7 mph12 km/h NortheastMostly Clear
8pm46°F8°C8 mph13 km/h NortheastClear
9pm45°F7°C8 mph13 km/h NortheastClear
10pm44°F7°C8 mph13 km/h NortheastClear
11pm43°F6°C8 mph14 km/h NortheastClear
May 9
12am42°F6°C9 mph14 km/h NortheastClear
1am43°F6°C9 mph15 km/h NortheastClear
2am45°F7°C10 mph16 km/h NortheastMostly Clear
3am48°F9°C11 mph17 km/h NortheastMostly Clear
DateLowHighWindDayNight
May 745°F7°C61°F16°C8 mph12 km/h from NortheastMostly CloudyClear
May 842°F6°C65°F18°C11 mph18 km/h from EastMostly ClearMostly Clear
May 947°F8°C69°F21°C12 mph19 km/h from EastClearPartly Cloudy
May 1053°F12°C72°F22°C12 mph19 km/h from SoutheastPartly CloudyPartly Cloudy
May 1154°F12°C69°F20°C6 mph10 km/h from SoutheastRainPartly Cloudy
May 1251°F11°C71°F22°C8 mph12 km/h from NortheastPartly CloudyMostly Clear
May 1348°F9°C69°F20°C7 mph12 km/h from EastPartly CloudyMostly Clear

Yes

Low of 42°F6°C, High of 64°F18°C
Wind: 11 mph18 km/h
Precipitation: None

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