Yes

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

Why? Because it's cool. Pleasantly cool, but cool!
50°F10°C & Mostly Clear

Wind is 6 mph10 km/h from the West, gusting to 14 mph22 km/h
June 8
9pm49°F10°C6 mph10 km/h SouthwestClear
10pm48°F9°C6 mph9 km/h SouthwestMostly Clear
11pm48°F9°C6 mph9 km/h SouthwestMostly Clear
June 9
12am48°F9°C5 mph9 km/h SouthwestMostly Clear
1am49°F9°C6 mph9 km/h SouthwestMostly Clear
2am52°F11°C6 mph10 km/h SouthwestMostly Clear
3am55°F13°C7 mph11 km/h WestPartly Cloudy
4am58°F14°C7 mph12 km/h WestMostly Cloudy
5am60°F16°C8 mph12 km/h WestMostly Cloudy
6am62°F17°C8 mph13 km/h SouthwestMostly Cloudy
7am63°F17°C9 mph14 km/h SouthwestMostly Cloudy
8am64°F18°C9 mph15 km/h SouthwestMostly Cloudy
DateLowHighWindDayNight
June 848°F9°C66°F19°C9 mph15 km/h from SouthwestMostly CloudyCloudy
June 954°F12°C70°F21°C12 mph19 km/h from WestCloudyMostly Clear
June 1053°F12°C76°F24°C8 mph13 km/h from SoutheastPartly CloudyMostly Cloudy
June 1159°F15°C72°F22°C11 mph18 km/h from SouthDrizzlePartly Cloudy
June 1256°F13°C77°F25°C9 mph14 km/h from SouthPartly CloudyRain
June 1358°F14°C71°F22°C11 mph17 km/h from SouthwestMostly CloudyMostly Clear
June 1454°F12°C69°F21°C9 mph15 km/h from WestPartly CloudyMostly Clear

Yes

Low of 55°F13°C, High of 70°F21°C
Wind: 12 mph19 km/h
Precipitation: 7% rain

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