First frost of the season on the horizon for Montreal | Suburban weather

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The coldest air so far this fall will settle in southern Quebec over the weekend.

The onset of cold weather has certainly been slow in eastern Canada this fall. Southern Quebec experienced another balmy day on Wednesday, with high temperatures among middle to upper teenagers across the region. Trudeau Airport recorded a high of 18.2C (65F), well above the long-term average of 11C (52F) for the date. We are already at 13C (55F) Thursday morning. This trend will continue for about a day before the onset of a strong cold front on Friday.

Before this front, we can expect scattered showers on Thursday, with a period of constant rain and perhaps a thunderous rumble late at night and into the wee hours of Friday morning. Montreal will see a noticeable change in air mass on Friday, as temperatures drop to upper numbers in the afternoon, with a westerly wind gusting to 40 km / h. Clouds will persist with maybe a pinch or two.

The sky will be partly cloudy throughout the weekend, with seasonal temperatures. If the sky clears completely from Saturday night to Sunday morning, there’s a good chance Montreal will experience the first frost of the season. The overnight low is expected to fall to freezing in the city and below in the suburbs. The average day of the first frost in Montreal is October 5.

Beyond the weekend, seasonal temperatures are expected next week, with no major storms on the horizon for now.


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