Yes

you do need a jacket based on the weather in Wimborne Minster, Wimborne BH21, UK 1 second ago

Why? Because the drizzle is not enough rain to call it "raining," but enough to make you a little soggy and it's not very warm out and the wind is harsh and biting!
59°F15°C & Drizzle

Wind is 13 mph21 km/h from the West, gusting to 23 mph37 km/h
October 21
3pm59°F15°C12 mph20 km/h WestMostly Cloudy
4pm58°F14°C11 mph18 km/h WestPartly Cloudy
5pm57°F14°C9 mph14 km/h WestPartly Cloudy
6pm55°F13°C8 mph14 km/h WestPartly Cloudy
7pm53°F12°C8 mph12 km/h WestMostly Clear
8pm52°F11°C7 mph11 km/h WestMostly Clear
9pm52°F11°C7 mph11 km/h WestPartly Cloudy
10pm51°F11°C6 mph10 km/h WestPartly Cloudy
11pm50°F10°C7 mph10 km/h WestPartly Cloudy
October 22
12am50°F10°C6 mph10 km/h WestPartly Cloudy
1am49°F10°C6 mph9 km/h WestPartly Cloudy
2am49°F10°C5 mph8 km/h WestPartly Cloudy
DateLowHighWindDayNight
October 2050°F10°C59°F15°C8 mph13 km/h from WestDrizzlePartly Cloudy
October 2147°F8°C58°F14°C5 mph9 km/h from SouthwestRainRain
October 2245°F7°C56°F13°C21 mph34 km/h from NorthwestRainWindy
October 2342°F5°C53°F12°C16 mph26 km/h from WestWindyPartly Cloudy
October 2442°F5°C51°F11°C13 mph21 km/h from NorthwestPartly CloudyMostly Clear
October 2541°F5°C51°F11°C12 mph19 km/h from NorthwestPartly CloudyMostly Cloudy
October 2745°F7°C55°F13°C16 mph25 km/h from NorthwestWindyPartly Cloudy

Yes

Low of 47°F9°C, High of 57°F14°C
Wind: 5 mph9 km/h
Precipitation: 66% rain

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