Yes

you do need a jacket based on the weather in Belleville, ON, Canada 1 second ago

Why? Because it's FREEZING out there!
23°F-5°C & Cloudy

Wind is 5 mph8 km/h from the West, gusting to 12 mph20 km/h
January 11
8pm23°F-5°C5 mph9 km/h WestPartly Cloudy
9pm22°F-6°C5 mph8 km/h WestPartly Cloudy
10pm22°F-6°C5 mph7 km/h WestPartly Cloudy
11pm22°F-6°C4 mph6 km/h NorthwestPartly Cloudy
January 12
12am21°F-6°C4 mph6 km/h NorthwestMostly Cloudy
1am22°F-6°C3 mph5 km/h NorthwestCloudy
2am23°F-5°C2 mph3 km/h NorthwestCloudy
3am24°F-4°C3 mph4 km/h NorthwestMostly Cloudy
4am23°F-5°C3 mph4 km/h NorthwestMostly Cloudy
5am23°F-5°C3 mph5 km/h NorthwestCloudy
6am22°F-6°C2 mph3 km/h NorthwestMostly Cloudy
7am22°F-6°C2 mph4 km/h NorthwestMostly Cloudy
DateLowHighWindDayNight
January 1120°F-6°C28°F-2°C3 mph5 km/h from NorthwestMostly CloudyMostly Cloudy
January 1221°F-6°C31°F-1°C3 mph4 km/h from SoutheastMostly CloudyCloudy
January 1323°F-5°C34°F1°C12 mph19 km/h from SouthwestMostly CloudyMostly Cloudy
January 1417°F-8°C24°F-5°C14 mph23 km/h from WestMostly CloudyPartly Cloudy
January 159°F-13°C19°F-7°C8 mph14 km/h from NorthwestClearPartly Cloudy
January 169°F-13°C26°F-3°C9 mph15 km/h from SouthwestCloudyMostly Cloudy
January 1718°F-8°C33°F0°C10 mph16 km/h from SouthwestMostly CloudyCloudy

Yes

Low of 20°F-7°C, High of 31°F-1°C
Wind: 3 mph4 km/h
Precipitation: None

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