Published on Aug. 25, 2025, 2:11 PM
Updated on Aug. 25, 2025, 3:15 PM
You may be disappointed if you’re planning on heading south for warmer temperatures.
Meteorological summer is coming to a close, but that doesn’t mean the heat is going anywhere just yet… at least for some of Canada.
A deep dip in the jet stream has ushered in an interesting temperature pattern across Canada and the United States. While this pattern flip will be beneficial for many communities that are facing raging wildfires, it also raises concerns for others that have yet to see a busy fire season.
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Within the dip, we have Eastern Canada and much of the U.S., which have had a blazing hot summer with little relief. Now, however, we’re seeing temperatures begin to drop as we head into the final week of August.
Temperatures across the Eastern U.S. and Great Lakes regions are sitting about 10-15 degrees below seasonal as the cold and dry air takes hold, giving folks an early taste of fall weather.
Ontario hasn’t seen temperatures fall below 20 degrees since June 13, but most of the province will struggle to see temperatures reach 20 degrees throughout the week as another blast of cold air seeps in by Friday.
Flip side: Rest of Canada feels the heat
Whereas Eastern Canada is left in the cold to close out August, Western and Northern Canada will be feeling the summer heat.