Yes

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

Why? Because it's cold enough that makes you wish you had a hat, but you're still too proud to admit it!
44°F7°C & Cloudy

Wind is 2 mph3 km/h from the Southwest, gusting to 4 mph6 km/h
December 13
10am44°F7°C2 mph4 km/h SouthwestCloudy
11am43°F6°C2 mph3 km/h SouthwestCloudy
12pm42°F6°C3 mph4 km/h SouthwestCloudy
1pm42°F5°C2 mph4 km/h SouthwestMostly Cloudy
2pm41°F5°C2 mph4 km/h SouthwestCloudy
3pm41°F5°C3 mph5 km/h SouthCloudy
4pm40°F5°C4 mph6 km/h SouthCloudy
5pm40°F4°C4 mph6 km/h SouthwestCloudy
6pm41°F5°C4 mph6 km/h WestMostly Cloudy
7pm40°F4°C4 mph7 km/h WestMostly Cloudy
8pm40°F4°C5 mph7 km/h NorthwestCloudy
9pm41°F5°C5 mph8 km/h NorthwestDrizzle
DateLowHighWindDayNight
December 1240°F4°C44°F7°C2 mph4 km/h from SouthCloudyCloudy
December 1337°F3°C47°F8°C9 mph14 km/h from NorthwestMostly CloudyDrizzle
December 1447°F8°C53°F12°C15 mph25 km/h from WestDrizzleWindy
December 1547°F8°C51°F10°C15 mph25 km/h from SouthwestWindyMostly Cloudy
December 1644°F7°C49°F10°C10 mph17 km/h from SouthCloudyDrizzle
December 1745°F7°C55°F13°C17 mph27 km/h from SouthwestRainRain
December 1839°F4°C45°F7°C20 mph32 km/h from WestDrizzleWindy

Yes

Low of 37°F3°C, High of 46°F8°C
Wind: 9 mph14 km/h
Precipitation: None

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