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Weather in Châteauguay for December 2025

Your guide to Châteauguay weather in December - trends and predictions

    Snow Forecast ❄️

  • With an average of 2 snowy days, Châteauguay usually enjoys a light touch of snow in December.
    According to Châteauguay snow forecast for December 2025, 9 snowy days are expected until the end of the month. The closest date with snow is Monday, 15 December.

    • Temperatures

  • Until now, December 2025 in Châteauguay has been significantly cooler than historical averages by -2 °C, with average temperature of -2.5 °C.

  • Expect cooler weather in the next days in Châteauguay with the forecast suggesting a temperature of -4.4 °C, lower than the historical average.

  • In general, the average temperature in Châteauguay at the beginning of December is -0.3 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of -5.1 °C by the end of December.

    • Rain 🌧️

  • Châteauguay experiences moderate rainfall in December, with an average of 9 rainy days and a total precipitation of 442 mm.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
20
Dry days
Average rainy days
9
Rainy days
Average snowy days
2
Snow days
Average temperatures
2°/-7°
Temperatures
Average wind speed
18 km/h
Avg max wind
Average humidity
85 %
Avg humidity

Châteauguay Weather December

Move between months or click on a day
November
January
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Fog
2°
2
Light sleet
-0°
3
Light freezing rain
1°
4
Overcast
0°
5
Light freezing rain
-1°
6
Freezing fog
-2°
7
Freezing fog
-2°
8
Freezing fog
-2°
9
Freezing fog
-1°
10
Heavy rain
2°
11
Heavy snow
-1°
12
Overcast
-1°
13
Partly cloudy
-1°
14
Partly cloudy
-2°
15
Partly cloudy
-7°
16
Partly cloudy
-3°
17
Light freezing rain
2°
18
Moderate or heavy snow showers
-0°
19
Patchy rain possible
7°
20
Moderate snow
-7°
21
Heavy snow
1°
22
Sunny
-11°
23
Patchy moderate snow
-1°
24
Patchy rain possible
1°
25
Overcast
-11°
26
Heavy snow
-5°
27
Moderate snow
-15°
28
Light freezing rain
-12°
29
Light drizzle
3°
30
Moderate snow
3°
31
Sunny
1°

Temperatures trend during December in Châteauguay

See the weather trend as well as the moving average line

December weather in Châteauguay day by day

Click on a date for more information
November January
Date Weather Temperatures Rain Snow More
1 Dec. Fog
Fog
 2° /-2° 0.6 mm 0 cm
2 Dec. Light sleet
Light sleet
 0° /-4° 3.4 mm 1.6 cm
3 Dec. Light freezing rain
Light freezing rain
 1° /-4° 5.9 mm 0.4 cm
4 Dec. Overcast
Overcast
 0° /-6° 7.6 mm 6.4 cm
5 Dec. Light freezing rain
Light freezing rain
 -1° /-7° 6.9 mm 5 cm
6 Dec. Freezing fog
Freezing fog
 -2° /-11° 1.3 mm 0.9 cm
7 Dec. Freezing fog
Freezing fog
 -2° /-11° 0.9 mm 0.6 cm
8 Dec. Freezing fog
Freezing fog
 -2° /-11° 7.3 mm 5.3 cm
9 Dec. Freezing fog
Freezing fog
 -1° /-8° 5.9 mm 4.2 cm
10 Dec. Heavy rain
Heavy rain
 2° /-3° 36.4 mm 11.9 cm
11 Dec. Heavy snow
Heavy snow
 -1° /-4° 18.9 mm 2.4 cm
12 Dec. Overcast
Overcast
 -1° /-7° 5.7 mm 0.1 cm
13 Dec. Partly cloudy
Partly cloudy
 -1° /-8° 0.1 mm 0 cm
14 Dec. Partly cloudy
Partly cloudy
 -2° /-9° 0 mm 0 cm
15 Dec. Partly cloudy
Partly cloudy
 -7° /-14° 0.1 mm 0 cm
16 Dec. Partly cloudy
Partly cloudy
 -3° /-9° 0 mm 0 cm
17 Dec. Light freezing rain
Light freezing rain
 2° /-4° 0.1 mm 0 cm
18 Dec. Moderate or heavy snow showers
Moderate or heavy snow showers
 0° /-10° 1.6 mm 0 cm
19 Dec. Patchy rain possible
Patchy rain possible
 7° /-7° 4.5 mm 0.1 cm
20 Dec. Moderate snow
Moderate snow
 -7° /-11° 1.5 mm 1 cm
21 Dec. Heavy snow
Heavy snow
 1° /-8° 3 mm 2.1 cm
22 Dec. Sunny
Sunny
 -11° /-14° 0 mm 0 cm
23 Dec. Patchy moderate snow
Patchy moderate snow
 -1° /-8° 0.7 mm 0.5 cm
24 Dec. Patchy rain possible
Patchy rain possible
 1° /-7° 0.3 mm 0.2 cm
25 Dec. Overcast
Overcast
 -11° /-15° 0 mm 0 cm
26 Dec. Heavy snow
Heavy snow
 -5° /-12° 1.8 mm 1.3 cm
27 Dec. Moderate snow
Moderate snow
 -15° /-18° 0.4 mm 0.3 cm
28 Dec. Light freezing rain
Light freezing rain
 -12° /-17° 0.2 mm 0.2 cm
29 Dec. Light drizzle
Light drizzle
 3° /1° 8.8 mm 0 cm
30 Dec. Moderate snow
Moderate snow
 3° /1° 7.9 mm 0.6 cm
31 Dec. Sunny
Sunny
 1° /-1° 0 mm 0 cm
Next
Important Notice
Our weather forecast for Châteauguay in December is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Châteauguay forecast closer to your planned date for the most up-to-date weather information.
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Châteauguay in December - FAQ

What are the expected maximum and minimum temperatures in Châteauguay during December?
Brace for cold days with temperatures not exceeding 2° and nights that are likely to be freezing. Winter clothing is essential for comfort and safety.
How much rainfall should be expected in Châteauguay during December?
Significant rainfall exceeding 442 mm is expected in Châteauguay during December, occurring over more than 9 days. Preparing for wet conditions is recommended in your planning.
Will it snow in Châteauguay in December 2025?
Châteauguay experiences an average snowfall of 130.6 cm during December, occurring over 2 days.
What are the typical wind conditions in Châteauguay during December?
The average wind speed in Châteauguay during December is 18 km/h, suggesting breezy to windy conditions, depending on your activities.

Châteauguay snow forecast December 2025

Track daily snowfall levels and discover Châteauguay’s snowy potential this December ❄️
On average, Châteauguay sees 2 snowy days during December, with approximately 130.6 cm of total snowfall.

December rainfall patterns in Châteauguay

Explore the daily rainfall trends and prepare for Châteauguays December weather 💧
Typically, Châteauguay has 9 rainy days in December with a total of 442 mm of rainfall.

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Get accurate weather forecasts for Châteauguay, located at latitude 45.383 and longitude -73.749. Stay updated with localized weather information tailored for Châteauguay.

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