Yes

you do need a jacket based on the weather in 199 Bell Blvd #3, Belleville, ON K8P 5B8, Canada 1 second ago

Why? Because it's not very warm out.
55°F13°C & Cloudy

Wind is 12 mph20 km/h from the SW, gusting to 25 mph41 km/h
April 19
4pm55°F13°C13 mph21 km/h SWCloudy
5pm57°F14°C13 mph21 km/h WMostly Cloudy
6pm57°F14°C12 mph20 km/h WPartly Cloudy
7pm55°F13°C10 mph16 km/h WMostly Clear
8pm52°F11°C8 mph12 km/h WPartly Cloudy
9pm49°F10°C7 mph12 km/h WPartly Cloudy
10pm47°F8°C7 mph11 km/h WMostly Clear
11pm45°F7°C6 mph9 km/h WMostly Cloudy
April 20
12am44°F7°C6 mph10 km/h WMostly Cloudy
1am42°F6°C6 mph9 km/h NWMostly Cloudy
2am41°F5°C5 mph9 km/h WMostly Cloudy
3am39°F4°C4 mph7 km/h WMostly Cloudy
DateLowHighWindDayNight
April 1944°F7°C57°F14°C10 mph15 km/h from SRainPartly Cloudy
April 2037°F3°C49°F9°C12 mph19 km/h from WMostly CloudyMostly Clear
April 2133°F1°C50°F10°C14 mph22 km/h from WMostly CloudyMostly Clear
April 2230°F-1°C48°F9°C8 mph13 km/h from WClearPartly Cloudy
April 2335°F2°C58°F15°C11 mph18 km/h from SWCloudyDrizzle
April 2439°F4°C53°F12°C11 mph17 km/h from NWDrizzleMostly Clear
April 2534°F1°C54°F12°C7 mph12 km/h from NWPartly CloudyMostly Clear

Yes

Low of 37°F3°C, High of 48°F9°C
Wind: 12 mph19 km/h
Precipitation: None

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