Yes

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

Why? Because it feels like an icebox out there!
8°F-13°C & Mostly Clear

Wind is 4 mph7 km/h from the Northeast, gusting to 11 mph18 km/h
February 12
12am8°F-13°C5 mph8 km/h NortheastCloudy
1am8°F-13°C6 mph10 km/h NortheastCloudy
2am9°F-13°C7 mph12 km/h NortheastCloudy
3am9°F-13°C8 mph12 km/h NortheastCloudy
4am9°F-13°C7 mph11 km/h NortheastCloudy
5am10°F-12°C8 mph13 km/h NortheastCloudy
6am10°F-12°C10 mph16 km/h NortheastCloudy
7am11°F-12°C10 mph16 km/h NortheastCloudy
8am12°F-11°C11 mph18 km/h EastCloudy
9am14°F-10°C13 mph21 km/h EastCloudy
10am17°F-8°C14 mph23 km/h EastCloudy
11am19°F-7°C14 mph23 km/h EastCloudy
DateLowHighWindDayNight
February 116°F-14°C26°F-3°C4 mph7 km/h from WestMostly CloudyMostly Cloudy
February 128°F-13°C22°F-5°C16 mph25 km/h from EastSnowHeavy Snow
February 1316°F-9°C31°F-1°C18 mph29 km/h from WestSnowWindy
February 149°F-13°C18°F-8°C10 mph17 km/h from WestMostly CloudySnow
February 1515°F-10°C30°F-1°C9 mph14 km/h from EastSnowSnow
February 1613°F-10°C25°F-4°C14 mph23 km/h from NorthHeavy SnowWindy
February 174°F-15°C13°F-10°C18 mph29 km/h from WestWindyPartly Cloudy

Yes

Low of 8°F-14°C, High of 22°F-6°C
Wind: 16 mph25 km/h
Precipitation: 70% snow

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