December temperature outlook via Environment Canada 

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December temperature outlook via Environment Canada

Today marks the first day of meteorological winter. This three-month period is used for record-keeping and climate monitoring, allowing meteorologists to compare data like temperature and precipitation in a consistent way.

Let’s have a look at the map for the month of December, to see whether temperatures in your region will be below or above average.

The forecasts are categorized as follows:

  • blue indicates the probability that temperatures will be below normal;
  • grey to purple indicates the probability that temperatures will be near normal;
  • yellow to red indicates the probability that temperatures will be above normal; and
  • white indicates uncertainty regarding the temperature tendency this month.

All categories are compared to the 30 months of December between the 1991-2020 period. This map is a prediction of the daily average temperature anomaly (difference from normal) at 2 metres, the standard forecast height. It is not a daily maximum or minimum temperature forecast.

Long-range forecast user guide.

November overview

Temperatures in November were above-normal for the Territories, northern British Columbia, the Prairies, northwestern Ontario, and extreme northern Quebec.

Temperature anomaly (difference from normal) across Canada for the month of November.

In fact, parts of the Yukon and Nunavut finished the month 7°C above-normal, with Arviat, on the western shores of Hudson Bay, setting a record of 12°C on the 15th, beating the previous record of 4.6°C set back in 2021. Mild temperature waves kept dominating the Northwest throughout the month with only a few cooler-than-normal interruptions. Meanwhile, Atlantic Canada and parts of Quebec had a slightly below-normal November, and southern British Columbia, the eastern half of Ontario and much of Labrador were near normal.

This November, much of the area south of the Territories had below-normal precipitation, especially Alberta and western parts of Saskatchewan. On the other hand, western Newfoundland, eastern Quebec, parts of the Prairies, and northern British Columbia had above-normal precipitation.

Precipitation anomaly (difference from normal) across Canada for the month of November.

In the Territories, many areas also had above-normal precipitation. In fact, isolated pockets in Nunavut and Yukon received more than twice their normal monthly precipitation.


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