Yes

you do need a jacket based on the weather in Vaudreuil-Dorion, QC, Canada 1 second ago

Why? Because looks like it's raining and it's cold enough that makes you wish you had a hat, but you're still too proud to admit it and the wind is offering free, unsolicited face massages!
46°F8°C & Rain

Wind is 10 mph16 km/h from the Northwest, gusting to 21 mph34 km/h
May 19
1am46°F8°C9 mph15 km/h NorthwestRain
2am46°F8°C9 mph15 km/h NorthwestCloudy
3am46°F8°C9 mph15 km/h NorthwestCloudy
4am46°F8°C10 mph16 km/h NorthwestCloudy
5am45°F7°C10 mph17 km/h NorthwestCloudy
6am45°F7°C11 mph17 km/h NorthwestCloudy
7am46°F8°C12 mph19 km/h NorthwestCloudy
8am46°F8°C12 mph20 km/h NorthwestCloudy
9am47°F8°C12 mph20 km/h NorthwestCloudy
10am47°F8°C12 mph20 km/h NorthwestCloudy
11am49°F9°C12 mph20 km/h NorthwestCloudy
12pm49°F10°C13 mph20 km/h NorthwestCloudy
DateLowHighWindDayNight
May 1945°F7°C52°F11°C12 mph19 km/h from NorthwestDrizzleCloudy
May 2044°F7°C53°F12°C6 mph10 km/h from NorthCloudyCloudy
May 2147°F8°C57°F14°C10 mph16 km/h from EastDrizzleDrizzle
May 2247°F8°C52°F11°C12 mph20 km/h from EastRainDrizzle
May 2346°F8°C52°F11°C8 mph13 km/h from NortheastDrizzleDrizzle
May 2445°F7°C55°F13°C6 mph9 km/h from NorthDrizzleMostly Cloudy
May 2545°F7°C63°F17°C6 mph10 km/h from WestMostly CloudyMostly Cloudy

Yes

Low of 45°F7°C, High of 53°F12°C
Wind: 6 mph10 km/h
Precipitation: 10% rain

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