Yes

you do need a jacket based on the weather in Montreal, QC, Canada 9 seconds ago

Why? Because you're not freezing, but you’ll definitely start complaining if it lasts much longer and it's super windy outside!
43°F6°C & Cloudy

Wind is 12 mph20 km/h from the Northeast, gusting to 27 mph44 km/h
November 21
11pm43°F6°C13 mph21 km/h NortheastRain
November 22
12am42°F6°C13 mph21 km/h NortheastRain
1am42°F6°C13 mph21 km/h NortheastRain
2am42°F6°C14 mph22 km/h NortheastRain
3am42°F6°C15 mph24 km/h NortheastRain
4am42°F5°C15 mph25 km/h NortheastRain
5am41°F5°C16 mph25 km/h NortheastRain
6am41°F5°C16 mph26 km/h NortheastRain
7am41°F5°C16 mph26 km/h NortheastRain
8am42°F5°C17 mph27 km/h NortheastRain
9am42°F6°C17 mph28 km/h NortheastRain
10am43°F6°C17 mph28 km/h NortheastDrizzle
DateLowHighWindDayNight
November 2140°F4°C46°F8°C6 mph10 km/h from NortheastCloudyRain
November 2238°F4°C46°F8°C16 mph26 km/h from NortheastRainDrizzle
November 2337°F3°C44°F6°C8 mph13 km/h from NorthwestDrizzleCloudy
November 2434°F1°C40°F5°C14 mph23 km/h from WestMostly CloudyMostly Clear
November 2532°F-0°C42°F5°C6 mph9 km/h from SouthwestMostly CloudyRain
November 2636°F2°C45°F7°C11 mph18 km/h from SouthwestRainMostly Cloudy
November 2730°F-1°C37°F3°C13 mph22 km/h from WestMostly CloudyPartly Cloudy

Yes

Low of 38°F4°C, High of 46°F8°C
Wind: 16 mph26 km/h
Precipitation: 80% rain

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