Published on Aug. 31, 2025, 12:52 AM
Temperatures could soar close to the 40-degree mark in some areas during the opening days of September
As hints of fall continue to creep across Canada, stubborn summertime heat is hanging on for some parts of the country.
The recent spate of above-seasonal temperatures on the West Coast will continue straight into the upcoming week, potentially threatening to topple the record for Canada’s hottest-ever reading in the month of September.
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A ridge of high pressure parked over British Columbia will reinforce in the days ahead, prolonging the unusually high heat many communities have experienced of late. Lytton, B.C., just saw a historic streak of four consecutive 40°C days.
Temperatures will come in 10-15 degrees above seasonal for the end of August and beginning of September, with the highest readings across the typical hot-spots within B.C.’s Interior.
We’ll see daytime highs in the mid- to upper-30s throughout the Interior during the week ahead. Some areas could meet or exceed 40 degrees, with Lytton a prime candidate to hit the mark.
40.0°C is the hottest temperature ever recorded in Canada during the month of September. Two communities have reached that milestone—Morden, Man., back in 1906, and again 34 years later in Lost River, Sask.