The heat wave that has been affecting southern Quebec for several days now could begin to show signs of easing on Wednesday, but the return of cooler weather is expected to be accompanied by thunderstorms.
As of Wednesday morning, southern Quebec was still under a heat warning from Environment and Climate Change Canada (ECCC), as temperatures will remain high early in the day.
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The federal agency indicates that maximum temperatures of nearly 30°C are expected Wednesday. Combined with high humidity, this will generate humidex values between 35°C and 38°C.
Later, a cooler, less humid air mass will slowly move in from the northwest, which should end the heat wave.
This cold front will initially offer some respite to Ontario, which has also been dealing with intense heat for several days, before making its presence felt in Quebec.
The passage of this cold front could, however, generate rain or thunderstorms in the afternoon and evening.
“Becoming cloudy this morning with 60 per cent chance of showers late this morning and this afternoon,” ECCC said on Montreal’s forecast for Wednesday. “Risk of thunderstorms this afternoon.”
Starting Thursday, more seasonal maximum temperatures and a drop in humidity are expected, according to ECCC. Nights are also expected to be cooler.
Cloudy and 27°C but feeling more like 34°C with the humidex in Montreal tomorrow. Then clear skies and a low of 13°C at night.
Come Friday, sunshine and a daytime high of 27°C expected.
Saturday is forecasted to be a beautiful one with 31°C and more sunny skies.
Then showers are expected to come in on Sunday, a high of 23°C.
For now, ECCC is forecasting sunshine for Monday and Tuesday next week.
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Numerous heat records have been broken in recent days in Quebec and Ontario, as well as in British Columbia, where a heat wave is also underway.
One heat-related death has been reported to the Montreal Regional Public Health Department since the start of the extreme heat.
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The drought accompanying this heat wave is having its own impacts, such as lowered water levels in some rivers and the imposition of watering bans in some municipalities.
The heat persists in the Maritimes
Meanwhile, New Brunswick, Nova Scotia, and Prince Edward Island will continue to record high maximum temperatures on Wednesday.
In these provinces, maximum temperatures will remain above 30 degrees Celsius during the day, with a humidex around 40.
The Maritimes will have to wait until Thursday, or even Thursday night, before the passage of the cold front brings the temperature down somewhat.
In Newfoundland and Labrador, Environment Canada predicts that extreme heat will continue until Thursday, or even Friday in some areas.
—With files from The Canadian Press, first published in French and translated by CityNews
