Yes

you do need a jacket based on the weather in Côte Saint-Luc, QC, Canada 1 second ago

Why? Because it's not very warm out!
52°F11°C & Cloudy

Wind is 5 mph8 km/h from the Northwest, gusting to 10 mph16 km/h
May 24
3pm52°F11°C6 mph9 km/h NorthwestDrizzle
4pm52°F11°C5 mph7 km/h NorthwestDrizzle
5pm52°F11°C5 mph8 km/h NorthwestDrizzle
6pm52°F11°C5 mph9 km/h NorthwestDrizzle
7pm51°F10°C4 mph7 km/h NorthwestDrizzle
8pm50°F10°C3 mph5 km/h NorthwestDrizzle
9pm49°F10°C3 mph6 km/h NorthwestDrizzle
10pm48°F9°C4 mph6 km/h NorthwestCloudy
11pm48°F9°C4 mph7 km/h NorthwestMostly Cloudy
May 25
12am47°F8°C4 mph7 km/h NorthwestMostly Cloudy
1am46°F8°C5 mph8 km/h NorthwestPartly Cloudy
2am46°F8°C5 mph9 km/h NorthwestPartly Cloudy
DateLowHighWindDayNight
May 2444°F7°C52°F11°C4 mph7 km/h from NorthwestDrizzleDrizzle
May 2545°F7°C61°F16°C6 mph9 km/h from NorthwestMostly CloudyPartly Cloudy
May 2648°F9°C69°F21°C5 mph9 km/h from WestPartly CloudyMostly Clear
May 2752°F11°C74°F23°C5 mph8 km/h from WestMostly ClearClear
May 2853°F12°C77°F25°C3 mph5 km/h from SouthMostly ClearMostly Cloudy
May 2957°F14°C66°F19°C5 mph8 km/h from SouthDrizzleRain
May 3055°F13°C68°F20°C11 mph18 km/h from WestDrizzlePartly Cloudy

Yes

Low of 46°F8°C, High of 61°F16°C
Wind: 6 mph9 km/h
Precipitation: 19% rain

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