Yes

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

Why? Because the air feels like the cozy middle ground between summer and winter!
55°F13°C & Mostly Cloudy

Wind is 4 mph6 km/h from the North, gusting to 6 mph9 km/h
June 6
3am54°F12°C4 mph7 km/h NorthMostly Cloudy
4am54°F12°C5 mph8 km/h NorthCloudy
5am54°F12°C4 mph7 km/h NorthCloudy
6am53°F12°C5 mph7 km/h NorthCloudy
7am55°F13°C4 mph6 km/h NorthMostly Cloudy
8am60°F15°C7 mph11 km/h NortheastCloudy
9am63°F17°C7 mph11 km/h NortheastMostly Cloudy
10am66°F19°C8 mph12 km/h NortheastMostly Cloudy
11am69°F20°C8 mph14 km/h NortheastMostly Cloudy
12pm70°F21°C8 mph14 km/h NortheastMostly Cloudy
1pm72°F22°C8 mph13 km/h NortheastMostly Cloudy
2pm73°F23°C7 mph12 km/h NortheastPartly Cloudy
DateLowHighWindDayNight
June 653°F12°C74°F23°C7 mph11 km/h from NortheastMostly CloudyMostly Cloudy
June 756°F13°C74°F24°C7 mph11 km/h from NorthPartly CloudyMostly Cloudy
June 854°F12°C71°F21°C11 mph18 km/h from EastMostly CloudyDrizzle
June 956°F14°C69°F20°C10 mph16 km/h from SouthwestDrizzleDrizzle
June 1056°F13°C70°F21°C11 mph18 km/h from SouthwestDrizzleMostly Clear
June 1153°F12°C74°F24°C12 mph20 km/h from WestMostly ClearMostly Clear
June 1258°F15°C78°F25°C8 mph12 km/h from NorthwestMostly ClearClear

Yes

Low of 56°F14°C, High of 74°F24°C
Wind: 7 mph11 km/h
Precipitation: None

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