Yes

you do need a jacket based on the weather in Stratford-upon-Avon CV37, UK 1 second ago

Why? Because it's bitterly cold.
45°F7°C & Partly Cloudy

Wind is 7 mph12 km/h from the SW, gusting to 16 mph26 km/h
May 4
12am44°F7°C8 mph12 km/h SWPartly Cloudy
1am43°F6°C7 mph11 km/h SMostly Clear
2am45°F7°C7 mph11 km/h SClear
3am48°F9°C8 mph13 km/h SClear
4am50°F10°C9 mph15 km/h SWMostly Clear
5am53°F12°C10 mph16 km/h SWMostly Clear
6am55°F13°C10 mph16 km/h SWPartly Cloudy
7am57°F14°C10 mph16 km/h SWPartly Cloudy
8am59°F15°C9 mph15 km/h SWMostly Cloudy
9am60°F16°C8 mph13 km/h SWMostly Cloudy
10am61°F16°C7 mph12 km/h SWMostly Cloudy
11am61°F16°C6 mph10 km/h SWMostly Cloudy
DateLowHighWindDayNight
May 343°F6°C61°F16°C8 mph12 km/h from SWPartly CloudyMostly Cloudy
May 441°F5°C63°F17°C6 mph9 km/h from SEMostly CloudyDrizzle
May 548°F9°C62°F17°C7 mph11 km/h from NEDrizzlePartly Cloudy
May 645°F7°C66°F19°C6 mph9 km/h from NPartly CloudyMostly Cloudy
May 745°F7°C68°F20°C4 mph6 km/h from NEMostly CloudyMostly Cloudy
May 847°F8°C70°F21°C4 mph6 km/h from SWCloudyCloudy
May 950°F10°C70°F21°C3 mph5 km/h from NWCloudyPartly Cloudy

Yes

Low of 41°F5°C, High of 63°F17°C
Wind: 6 mph9 km/h
Precipitation: 16% rain

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