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Summer arrives on Tuesday, and the season begins hot and humid throughout Ontario. The week started with extreme heat and uncomfortable humidity for some, which became widespread on Tuesday. Powerful temperatures are expected in the late 1930s and mid-low, with humidex values entering the 40s for some areas, close to reaching or exceeding record levels. Tuesday night will not provide any heat relief, so it could be an uncomfortable sleep for many, even with proper cooling equipment. Learn more about how hot it will be and where the warmest temperatures will be, below.
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Heat warnings are in effect in southern Ontario, and a multi-day event is expected to persist until at least Wednesday.
An unusually strong and extensive high-pressure ridge south of the border will be responsible for trapping some of the warmest temperatures and humidex values so far this year, and some of those that have been recorded.
“Check out family, friends and older neighbors. Make sure it’s fresh, clean water,” Environment and Climate Change Canada says in the warning. “Reduce your risk of heat. Schedule outdoor activities during the cooler parts of the day.”
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A warm front will move slowly east to northeastern Ontario and southern Quebec on Tuesday, offering the possibility of bubbles from some storms, possibly severe in some areas. They could bring heavy hail, heavy rain and strong gusts of wind. Meanwhile, a non-severe threat is spreading to eastern Ontario and southern Quebec.
The biggest concern will be the spread of the heat, which will spread across the province for much of this week.
Humidex values will be between 30 and 40 maximum on Tuesday. Even Timmins, Ontario, will feel like 41 on Tuesday, on the verge of breaking its historic record of 44 set on July 1, 1963. The city of Windsor is expected to reach 37 ° C, with a humidex. value up to 40 years, which is some of the warmest temperatures of 2022 so far. If Windsor reaches 37 ° C, it will be the fourth warmest day in June and the warmest day of the month since June 25, 1988 (40.2 ° C). That day becomes the hottest day in the city’s history.
Tuesday night will not provide any heat relief, so it could be an uncomfortable sleep for many, even with the right cooling equipment.
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It will be a close call to Toronto with a 34 ° C forecast at Toronto’s Pearson Airport. Temperatures should exceed 33.3 ° C to be the warmest of the year so far.
“What makes this heat even worse is the fact that the night temperatures from Tuesday night to Wednesday night will not offer much relief,” says Matt Grinter, a meteorologist with The Weather Network. “Overnight temperatures are even expected to remain at 25 ° C in Windsor and around 20 ° C in the rest of southern Ontario, providing no relief, especially for those without air conditioning. “.
For areas close to the Great Lakes, the direction of the wind will determine the heat.
Although Sault Ste. Marie is usually protected from extreme heat by three Great Lakes, the city will experience an ideal wind direction from the Upper Michigan Peninsula on Tuesday that will send humidex up to 38 before crashing on Wednesday 19th.
Wednesday again hot and very humid, with the possibility of scattered storms as a cold front throughout the region. Storms will generally be widespread in eastern Ontario. Much lower humidity behind the front with almost seasonal temperatures returning for Thursday, but then the heat returns for the weekend.
A stronger cold front will continue in the region on Sunday with showers and storms followed by cooler weather for early next week. Temperatures are expected to be almost seasonal, possibly even a few degrees cooler than seasonal ones for a couple of days, during the last days of June, and during the long Canada Day weekend.
LOOK: HOW TO OVERCOME HEAT; TRICKS TO KEEP YOURSELF COOL
Thumbnail courtesy of Michelle Valancius.
Stay tuned to The Weather Network for the latest weather updates for Ontario.