Environment Canada Forecasts Early Hot, Humid Spell in SW Ontario

Environment and Climate Change Canada has forecast an early hot spell for parts of southwestern Ontario, with humidity and temperatures expected to run roughly 10 degrees above seasonal norms over the next few days.

According to the federal weather agency, the warmer conditions are expected to blanket the region from Windsor through the Kitchener-Waterloo area and up to Toronto from Monday to Wednesday. Daytime temperatures are forecast to reach the high 20s and low 30s, with a chance of showers. In areas such as Hamilton and Toronto, the agency said the combination of heat and humidity may cause temperatures to feel closer to 35 C during the tail end of the long weekend.

Environment Canada meteorologist Kristina Kretchman said the shift to hotter weather may feel abrupt given recent below-normal temperatures. She added that while the weather transition is noticeable, a hot spell at this time of year is not unusual. The agency’s outlook points to a warm air mass moving into Ontario from the United States, bringing both higher temperatures and additional moisture.

The federal government is also monitoring heat in eastern Ontario, including the Ottawa area, Kingston, and...