Yes

you do need a jacket based on the weather in Dursley GL11, UK 1 second ago

Why? Because it's quite chilly.
36°F2°C & Partly Cloudy

Wind is 3 mph5 km/h from the SW, gusting to 4 mph7 km/h
April 25
1am36°F2°C3 mph5 km/h SWMostly Clear
2am39°F4°C3 mph5 km/h WPartly Cloudy
3am42°F6°C4 mph6 km/h SWMostly Cloudy
4am45°F7°C6 mph9 km/h SWCloudy
5am46°F8°C8 mph12 km/h SWMostly Cloudy
6am48°F9°C10 mph16 km/h WCloudy
7am50°F10°C10 mph16 km/h WCloudy
8am51°F11°C10 mph15 km/h WCloudy
9am53°F11°C9 mph15 km/h WCloudy
10am53°F12°C10 mph15 km/h WDrizzle
11am53°F12°C9 mph14 km/h WCloudy
12pm52°F11°C9 mph14 km/h WCloudy
DateLowHighWindDayNight
April 2436°F2°C53°F12°C8 mph13 km/h from WCloudyCloudy
April 2540°F4°C51°F11°C8 mph13 km/h from NECloudyCloudy
April 2639°F4°C51°F11°C12 mph19 km/h from NEDrizzleRain
April 2742°F5°C53°F12°C11 mph18 km/h from NWRainPartly Cloudy
April 2838°F3°C57°F14°C14 mph22 km/h from SMostly CloudyPartly Cloudy
April 2942°F6°C61°F16°C14 mph22 km/h from SEPartly CloudyMostly Cloudy
April 3047°F8°C63°F17°C10 mph16 km/h from NEMostly CloudyPartly Cloudy

Yes

Low of 40°F5°C, High of 51°F11°C
Wind: 8 mph13 km/h
Precipitation: 41% rain

Support This Page