Sunday, May 29, 2022, 13:57 – Ontario is reaping the benefits of a well-placed high-pressure ridge over the next few days, allowing summer heat to creep into the province, even reaching northern areas.
Those in Ontario will want to go out and enjoy the summer weather this week as long as they can because it won’t last long. Heat and humidity will return on Monday and Tuesday, albeit due to a quick appearance to end May. Environment Canada has issued heat warnings for parts of southern Ontario. Warm temperatures are expected to cool by Wednesday due to a cold front that cuts across the region, which will make temperatures cooler during the first days of June. More information on what to expect in mid-week and early June, below.
Visit our Complete 2022 Summer Guide for a detailed view of the Summer Forecast, planning tips, and more!
THIS WEEK: QUICK PRESENTATION OF SUMMER HEAT TO END THE MONTH, BUT JUNE BEGINS COOLER
A strong high-pressure ridge anchored in the midwestern U.S. will help introduce similar summer heat earlier this week from the Gulf of Mexico. It will even reach northern Ontario, no matter how short.
Warm, humid weather will reach southern Ontario on Monday, with daytime highs reaching 20 degrees above and 30 degrees below, especially in the Greater Toronto Area (GTA) and southwest.
Environment Canada has issued a heat warning for parts of southern Ontario, such as Windsor, Leamington and Chatham-Kent. Maximum temperatures in these specified areas can be as low as the mid-thirties on Mondays and Tuesdays.
Humidex readings will be in the mid to high 30s in the south, accompanied by plenty of sunlight and high UV rays, so be prepared with sunscreen if you go outside.
The heat will continue on Tuesday, spreading to the northern sections with widespread temperatures of 30 ° C. Similar values can be expected, with even higher readings for some locations, while they will also be felt in northern Ontario.
Although the heat will spread to northern areas on Tuesday, extreme eastern sections along the Quebec border will feel the effects of a sharp temperature limit as cooler air tries to recede, but the ridge it won’t move much.
Therefore, as a result, a considerable temperature contrast is expected ranging from 20 degrees to 30 ° C at a fairly short distance, with Ottawa still sitting at the top 20 degrees.
Taste the heat for the duration, however, because temperatures will moderate beyond Wednesday. Temperatures will still be warm on Wednesday, but will drop below 30 degrees and humidity will remain.
A cold front is expected to cross the region on Wednesday afternoon with a period of showers and storms, followed by cooler weather late next week and continuing during the first weekend in June.
Don’t forget to check out our Summer Forecast revelation on Tuesday, May 31st!