Yes

you do need a jacket based on the weather in Marston Rd, Thornhill, Southampton SO19 6DA, UK 1 second ago

Why? Because it's cool enough your breath is visible, but your nose isn’t red yet!
36°F2°C & Cloudy

Wind is 4 mph6 km/h from the East, gusting to 6 mph9 km/h
January 21
3am36°F2°C4 mph6 km/h EastCloudy
4am37°F3°C4 mph7 km/h EastCloudy
5am39°F4°C5 mph8 km/h EastCloudy
6am41°F5°C5 mph9 km/h SoutheastCloudy
7am42°F6°C6 mph10 km/h SoutheastCloudy
8am43°F6°C7 mph11 km/h SoutheastCloudy
9am43°F6°C6 mph10 km/h SoutheastCloudy
10am43°F6°C6 mph10 km/h SoutheastCloudy
11am42°F6°C5 mph9 km/h SoutheastCloudy
12pm41°F5°C4 mph7 km/h SoutheastCloudy
1pm41°F5°C4 mph7 km/h EastCloudy
2pm41°F5°C5 mph7 km/h EastCloudy
DateLowHighWindDayNight
January 2034°F1°C43°F6°C5 mph8 km/h from SoutheastCloudyCloudy
January 2134°F1°C43°F6°C5 mph8 km/h from NorthCloudyMostly Cloudy
January 2233°F0°C48°F9°C14 mph22 km/h from SouthwestRainRain
January 2342°F6°C52°F11°C21 mph33 km/h from SouthwestRainCloudy
January 2438°F3°C46°F8°C6 mph10 km/h from SoutheastMostly CloudyMostly Cloudy
January 2538°F4°C48°F9°C15 mph24 km/h from SouthRainRain
January 2647°F8°C50°F10°C21 mph35 km/h from SouthDrizzleDrizzle

Yes

Low of 35°F2°C, High of 43°F6°C
Wind: 5 mph8 km/h
Precipitation: None

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