A new heat record was broken in the metropolis in 2024 because the mercury rose above 20 degrees Celsius for 143 days this year.
“It’s an increasing trend, we’ve seen that in recent years there have been more and more, so it’s one of the consequences of climate change where periods of mild weather are more and more present,” explains André Monette, meteorologist at MétéoMédia.
Yesterday, a new heat record of 21.8 degrees Celsius was broken, while the last time the mercury rose almost this high in November was in 1948, when it was 21.7 degrees Celsius.
“It’s in the late 20s! Hot temperatures arrive earlier and earlier and end later and later, so we remain in a mild regime for longer periods,” he adds.
Autumns with heat that lasts until November and early springs could become the new norm for Montrealers. The last record years recorded were 2023 and 2015 and the warmest to date was 2021.
According to Environment Canada, this period of mild weather seems more intense precisely because it is November.
“A system like this in January would have brought us a mild spell with a mixture of rain, snow and ice. […] to exceed 20 degrees is exceptional, but it is not unheard of, we beat it by a tenth of a degree yesterday,” underlines Jean-Philippe Bégin, of Environment Canada.
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