The passage of a cold front will open the door to an arctic air mass from the north of the continent.
The fall will be brutal: some regions, such as Abitibi-Témiscamingue, might lose nearly 15°C in barely six hours. The effects of this change in air mass have already been felt this Saturday. Val-d’Or, for example, lost 10°C in 4.5 hours. Some roads have had time to become covered in ice.
Southern Quebec will not be spared: overnight from Saturday to Sunday, the mercury might drop below -10°C.
Wind chill, the big comeback
An old acquaintance will also make a remarkable comeback: wind chill. Felt temperatures of up to -20 are possible in Abitibi-Témiscamingue and up to -23 in Nord-du-Québec. This biting cold will be especially noticeable in the morning, before losing feathers during the day on Sunday. .
Good to know : Wind chill refers to the feeling of cold on exposed skin caused by the combination of temperature and wind.
Southern Quebec will not be spared: a feeling of -10 is possible on Sunday morning, especially on the Montreal side.
The index was developed with the objective of enabling Canadians to better protect themselves from the cold. A bit like the Humidex, it takes into consideration a feeling rather than a raw data.
Ice to watch
This succession of mild weather, rain, and cold is a perfect combination for the creation of patches of ice on the road. Add to that a thin layer of snow, to camouflage the ice and give it a little more glide. You have the recipe for a perilous return home for those who have spent the weekend at the chalet. It will therefore be necessary to be very careful on the roads from Sunday morning.
