Yes

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

Why? Because a little drizzle out and it's cold enough that makes you wish you had a hat, but you're still too proud to admit it and it's really really huffing out there!
45°F7°C & Drizzle

Wind is 21 mph33 km/h from the South, gusting to 39 mph63 km/h
January 27
3pm45°F7°C21 mph33 km/h SouthDrizzle
4pm46°F8°C20 mph32 km/h SouthDrizzle
5pm46°F8°C20 mph33 km/h SouthWindy
6pm47°F8°C17 mph28 km/h SouthwestDrizzle
7pm47°F8°C15 mph24 km/h SouthwestDrizzle
8pm47°F8°C14 mph23 km/h SouthwestMostly Cloudy
9pm47°F8°C14 mph23 km/h SouthwestMostly Cloudy
10pm47°F8°C14 mph23 km/h SouthwestCloudy
11pm46°F8°C15 mph24 km/h SouthwestCloudy
January 28
12am46°F8°C13 mph21 km/h SouthwestCloudy
1am46°F8°C14 mph23 km/h WestCloudy
2am46°F8°C16 mph25 km/h WestDrizzle
DateLowHighWindDayNight
January 2642°F5°C49°F9°C14 mph22 km/h from SouthwestRainRain
January 2744°F7°C47°F8°C19 mph31 km/h from WestDrizzleMostly Cloudy
January 2838°F3°C44°F7°C11 mph18 km/h from NortheastRainDrizzle
January 2932°F0°C45°F7°C8 mph13 km/h from NorthwestMostly ClearPartly Cloudy
January 3032°F0°C49°F10°C6 mph9 km/h from WestPartly CloudyMostly Cloudy
January 3141°F5°C50°F10°C8 mph13 km/h from SouthCloudyCloudy
February 143°F6°C49°F10°C11 mph18 km/h from WestPartly CloudyMostly Cloudy

Yes

Low of 44°F7°C, High of 47°F9°C
Wind: 19 mph31 km/h
Precipitation: 90% rain

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