Two of the chilliest nights of the fall season are in store for southern Quebec, and the island of Montreal isn’t immune.
Montreal hasn’t fallen below 0.80°C so far this fall, but that’s hours away from changing with the coldest temperatures since March 25 (-5.30°C).
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It’s late, too, since the average first occurrence of a subfreezing temperature is during the first half of October, so we’re a couple of weeks behind schedule here. By Nov. 8, the average low falls below freezing on a daily occurrence.
With the encroaching cold comes the risk posed to crops and plants, so shelter them appropriately, pets and vulnerable populations. We can’t also forget a surge in energy costs to keep buildings heated during the cooldown.
This week:
A chilly area of high-pressure conditions will move across Quebec, providing the calm conditions to dip temperatures to the coolest readings since March.
The latest occurrence of a temperature falling below the freezing mark was on Nov. 3, 2021. The earliest instance of readings falling below the freezing mark occurred on Sept. 23, 1974.
Most of Quebec was late on average, except Sept-Îles, which recorded a first frost on Sept. 12.
Tuesday will be a few degrees warmer, and Wednesday will see even higher temperatures, with many places expected to reach or exceed 20°C with a gusty, southwest wind. We will also be watching the potential for [a record-warm Halloween on Thursday]((https://www.theweathernetwork.com/en/news/weather/forecasts/halloween-attempts-to-cast-cold-spell-across-canada-but-half-will-fight-back) with high temperatures in the upper teens and lower 20s.
At this point, however, it looks like a cold front will bring a period of showers during the day or on Thursday night, so there is still some uncertainty regarding conditions for trick-or-treating. While temperatures will be a treat, the weather will be more tricky.
Thumbnail courtesy of Getty Images/gretanrk/603861744-170667a.
Stay tuned to The Weather Network for the latest forecast updates for Quebec.