- hotter than usual fall;
- abundant but punctual rainfall;
- Transition to winter to see in November.
an unusual reference
The summer in Quebec was very hot. Autumn follows the same trend this year as well. Experts at MétéoMédia predict that the weather will be warmer than usual in exceptional terms. A few key factors will control the momentum for the next three months. Among the most important, consider La Nia, this cold water anomaly in the equatorial Pacific. The phenomenon exists for the third year in a row. Unheard of in 20 years.
“The fall will be pleasant and very mild, especially in September and October,” says chief meteorologist André Monet. The season would be punctuated by several beautiful days ideal for contemplating the colors. There may be abundant rainfall from time to time. The second half may see the arrival of a large fall system favored by strong winds. ,
Other key factors explain this singular reference that would favor Quebec with respect to temperature. The North American continent is surrounded by warm waters, not to mention that the Bermuda High will make its presence felt more and more often. These elements help pump in warm, moist air from the southern United States.
Regine Oimat says, “A more or less prolonged period of good weather with warmer than normal temperatures will persist throughout the season. Conversely, the descent of colder air will be punctual. This will prevent marked contrasts during the passage of cold fronts.” does not exclude. The duration of these surges of cold air should not extend over a long period. »
Maximum temperature between the beginning of September and the end of November:
- gasping: 21 °C to 0 °C;
- Sep-Iles: 17 °C to -2 °C;
- Rimouski: 20 °C to 0 °C;
- Roberval and Saguenay: 20 °C to -2 °C;
- Quebec and Lewis: 22°C to 0°C;
- Sherbrooke: 22°C to 1°C;
- Montreal: 24 °C to 1 °C;
- Val-d’Or: 20 °C to -3 °C;
- Gatineau: 24 °C to 0 °C.
a wonderful autumn
Quebec would be entitled to its share of rainfall during the season. Everything will be arranged in two phases: the first half will be punctuated by a few storms, while the second half of the fall will feature the passage of large systems well saturated with moisture. In addition, let’s not forget the remnants of tropical systems that sometimes move toward our regions and produce significant amounts of precipitation. Strong winds are also expected from these storms.
“In the short term, during the next few weeks, when the cold front marks the end of the warm period, we run the risk of experiencing thunderstorms, explains Regine Oimat. They will be marked by heavy rainfall, fortunately punctual and Very targeted. Like this summer. Then, the Bermuda Anticyclone, which will favor heat toward Quebec, could be an open door for the tropics and its accompanying storms. Heavy rain could hit Tip Wet Fall Camp. »
Rainfall between 1st September to 30th November
Water temperature in large pools will play an important role this fall. East of Quebec, the Atlantic is unusually warm. Same thing in the Pacific, except at the equator where La Nia has ruled for three years. This episode is special: we have rarely seen such a combination of factors. A scenario that favors an increase in humidity towards Quebec.
“It is rare to see a La Nia event repeat with such magnitude for the third year in a row,” says Regine Ouimet. The large amount of this layer of cold water is unusual at this time of year. At the same time, unusually warm waters at the level of the Atlantic also push the heat towards the northeast of the continent where Quebec is located. Vague Point: The waters south of Alaska are unusually warm. It all adds a mystical side to this fall. We are into something almost unheard of. ,
elsewhere in canada
- British Columbia: Near normal temperatures and above normal rainfall.
- Alberta, Saskatchewan and Manitoba: Near normal temperatures, dry season.
- Sea time: Temperatures and above normal rainfall.
- Yukon and Northwest Territories: Temperatures near normal.
See also: These factors will change the form of decline