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Threat of widespread Canada Day storms for Ontario, Quebec

Friday, July 1st 2022, 10:52 am - The heat will build across Ontario and Quebec on Canada Day setting the stage for a dynamic system to bring a severe thunderstorm risk all day Friday.


The heat will build across Ontario and Quebec on Canada Day setting the stage for a dynamic system to bring a severe thunderstorm risk all day Friday.

A potent system will push through Friday and heighten the chance for thunderstorms in the most heavily populated stretch of the country on one of the busiest days of the year for outdoor activities. Widespread thunderstorms are possible across all of southern and eastern Ontario and the southern half of Quebec. The timing of the thunderstorms is less than ideal for cookouts and fireworks displays.

friday ontario storm risk

Folks across the region can expect a chance for thunderstorms starting in the morning and lasting through the evening. Southern areas will have to be on the lookout for thunderstorms arriving just in time for dinner and fireworks this evening.

This system will be tapping into Gulf moisture which could lead to heavy rainfall. The other storm hazards are strong wind gusts and small hail. There is a chance to see severe storms from Windsor to Hamilton, as well as eastern Ontario and southern Quebec. In this region there is a risk for rotating storms which could produce the risk for a tornado.

The cold front responsible for sparking the risk for thunderstorms will also lead to a wide range in temperatures across Ontario and Quebec. Temperature highs will come in around the low- to mid-20s toward cottage country and into northern Ontario.

Warm and steamy conditions will build ahead of the front with daytime highs climbing into the upper 20s to around 30°C from the Greater Toronto Area north through Montreal. Highs should break into the lower 30s in southwestern Ontario.


Saturday is shaping up to be a gorgeous day behind the cold front. Abundant sunshine, lower humidity, and warm temperatures will make for a fantastic day to spend a little time outdoors—a treat for anyone whose plans are upended by Canada Day storms.


Sunday will see more sunshine across the region. Clouds will start to filter into cottage country, eventually spreading toward eastern Ontario and southern Quebec through the day on Sunday.

The first full week of July will see a sharp temperature divide set up across the region, with cooler weather to the north and warmer, muggier conditions locked in over the south. The boundary between these two air masses could serve as an active storm track for thunderstorms to roll through the area.

Stay tuned to The Weather Network for the latest on the storm risk in Ontario and Quebec.

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