Yes

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

Why? Because it's snowing - enough for fun, but still walkable and time to get cozy, it's freezing out there and it's windy enough to give you a brand new hairdo!
29°F-1°C & Snow

Wind is 11 mph18 km/h from the North, gusting to 22 mph35 km/h
November 10
9am29°F-1°C11 mph18 km/h NorthSnow
10am29°F-2°C12 mph20 km/h NorthSnow
11am28°F-2°C12 mph19 km/h NorthHaze
12pm28°F-2°C12 mph19 km/h NorthSnow
1pm28°F-2°C13 mph20 km/h NorthSnow
2pm28°F-2°C12 mph20 km/h NorthSnow
3pm29°F-2°C12 mph19 km/h NorthHaze
4pm29°F-1°C12 mph19 km/h NorthHaze
5pm31°F-0°C12 mph20 km/h NorthwestCloudy
6pm32°F-0°C12 mph20 km/h NorthwestCloudy
7pm32°F0°C12 mph20 km/h NorthwestCloudy
8pm32°F0°C12 mph19 km/h NorthwestCloudy
DateLowHighWindDayNight
November 1028°F-2°C32°F0°C12 mph20 km/h from NorthwestSnowCloudy
November 1129°F-2°C40°F4°C16 mph26 km/h from WestWindyDrizzle
November 1236°F2°C43°F6°C15 mph24 km/h from WestDrizzleWindy
November 1337°F3°C46°F8°C15 mph23 km/h from WestPartly CloudyPartly Cloudy
November 1436°F2°C48°F9°C8 mph13 km/h from WestPartly CloudyPartly Cloudy
November 1532°F0°C41°F5°C6 mph10 km/h from NortheastMostly CloudyMostly Cloudy
November 1634°F1°C51°F11°C11 mph18 km/h from SouthDrizzleRain

Yes

Low of 29°F-2°C, High of 39°F4°C
Wind: 16 mph26 km/h
Precipitation: None

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