Alert Weather in December
Thinking of visiting Alert in December? Expect very low temperatures reaching -25°C (-13°F) during the day, dropping to -31°C (-24°F) at night, with minimal snowfall.
Rainfall in Alert in December
Historically, approximately 8 days this month are expected to have snow, averaging 11 mm (0.4 in). Expect a fairly normal spread of rainfall this month, with no particular pattern of very heavy or very persistent showers.
Temperature in Alert in December
In December, expect very low temperatures in Alert, with highs of -25°C (-13°F) and lows of -31°C (-24°F) at night. Even daytime conditions remain cold, making layers, a warm coat, and winter accessories a good idea. At -31°C (-24°F) overnight, frost and ice are likely outside. Indoors, consider packing an extra blanket if you're unsure about the heating. As one of the coldest months, it's important to layer up to stay warm. Don't let the chill catch you off-guard.
Sunshine in Alert in December
This month is characterized by fewer sunny days, with about 0 hours of sunshine. It's great for those who appreciate cooler, less sunny days.
Wind Speed in Alert in December
Average wind conditions reach 2 m/s (4 knots) in December. This creates comfortable weather with light winds that gently move vegetation. Keep in mind this is an average. Daily conditions range from near-calm to more noticeable wind.If you prefer dry days with pleasant temperatures, December may not be the ideal month to visit Alert. Our weather planner can help you explore destinations with more pleasant weather conditions.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Canada, check out our Alert's climate page.
Alert Temperature in December
Min Temperature
-31°C (-24°F)
Max Temperature
-25°C (-13°F)
Chance of Rain
27%
Precipitation
11 mm (0.4 in)
Rainy days
8 days
Humidity
67%
Windspeed
2 m/s (4 knots)
Sunshine
0 hours
Percentage Sunshine
0%
Daily Historical Temperatures
46-year average (1976-2025)
Based on our historical records, temperatures in Alert typically stay consistent throughout December, with daily highs averaging around -25°C (-13°F). Nights are very cold, with lows typically ranging from -33°C (-27°F) to -29°C (-20°F).
Average temperatures in December
Historical weather for Alert in December
Browse day-by-day weather records for Alert spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Alert historical weather extremes in December
Based on 26 years of weather observations (1999-2025), these are the most extreme conditions recorded in Alert.
- The coldest December day was on December 13, 2004, with a maximum of -38°C (-36°F).
- The coldest night in December in Alert was on December 13, 2004, with a minimum of -44°C (-47°F).
Best Places in Canada in December
Find out more about the weather in Canada and which places have the best travel conditions in this month. See all of Canada in December →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Alert in December
It's wise to bundle up for freezing conditions in Alert in December. If you have a winter jacket with good insulation, waterproof winter boots, thermal layers, and warm accessories it's smart to pack them. Hand and foot warmers can be lifesavers, especially during the night. Dry conditions mean you won't need to worry about rain protection. With limited sunshine expected, sunglasses aren't a priority for packing.What To Do in Alert in December
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Canada, check out our Alert's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed
See the full Alert climate overview or explore weather in Canada.
