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Weather in Fort St. John for December 2025

Your guide to Fort St. John weather in December - trends and predictions

    Official Weather Alert ⚠️

  • Snowfall Warning - See hour by hour.

    • Snow Forecast ❄️

  • Fort St. John typically experiences moderate snowfall in December, with an average of 9 snowy days.
    According to Fort St. John snow forecast for December 2025, 12 snowy days are expected in the next 2 weeks. The closest date with snow is Saturday, 13 December.

    • Temperatures

  • Until now, December 2025 in Fort St. John has been significantly cooler than historical averages by -6.2 °C, with average temperature of -11.1 °C.

  • An exceptional deviation from the historical average is forecasted for next days of December 2025 in Fort St. John with the forecasted temperature being -21.5 °C, much lower than usual.

  • In general, the average temperature in Fort St. John at the beginning of December is -2.7 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of -10.7 °C by the end of December.

    • More

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

Average dry days
22
Dry days
Average rainy days
0
Rainy days
Average snowy days
9
Snow days
Average temperatures
-3°/-9°
Temperatures
Average wind speed
16 km/h
Avg max wind
Average humidity
84 %
Avg humidity

Fort St. John Weather December

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

Temperatures trend during December in Fort St. John

See the weather trend as well as the moving average line

December weather in Fort St. John day by day

Click on a date for more information
November January
Date Weather Temperatures Rain Snow More
1 Dec. Mist
Mist
 -7° /-16° 12.7 mm 9.2 cm
2 Dec. Mist
Mist
 -1° /-12° 0 mm 0 cm
3 Dec. Heavy snow
Heavy snow
 0° /-11° 7.3 mm 5.3 cm
4 Dec. Light freezing rain
Light freezing rain
 -1° /-9° 5.8 mm 4.2 cm
5 Dec. Partly cloudy
Partly cloudy
 -1° /-7° 1.9 mm 1.4 cm
6 Dec. Sunny
Sunny
 -4° /-9° 0 mm 0 cm
7 Dec. Partly cloudy
Partly cloudy
 -5° /-11° 1.3 mm 1 cm
8 Dec. Overcast
Overcast
 -8° /-14° 6.9 mm 5 cm
9 Dec. Light freezing rain
Light freezing rain
 -10° /-15° 0.9 mm 0.7 cm
10 Dec. Partly cloudy
Partly cloudy
 -7° /-14° 7.6 mm 5.5 cm
11 Dec. Overcast
Overcast
 -10° /-15° 0 mm 0 cm
12 Dec. Light snow
Light snow
 -10° /-16° 0 mm 0 cm
13 Dec. Moderate or heavy snow showers
Moderate or heavy snow showers
 -17° /-37° 6.6 mm 4.8 cm
14 Dec. Moderate or heavy snow showers
Moderate or heavy snow showers
 -18° /-21° 7.8 mm 5.6 cm
15 Dec. Moderate or heavy snow showers
Moderate or heavy snow showers
 -9° /-21° 6.3 mm 4.6 cm
16 Dec. Freezing fog
Freezing fog
 -13° /-29° 0.3 mm 0.2 cm
17 Dec. Heavy snow
Heavy snow
 -22° /-25° 3.9 mm 2.8 cm
18 Dec. Light snow
Light snow
 -24° /-25° 1.2 mm 0.9 cm
19 Dec. Freezing fog
Freezing fog
 -26° /-36° 0.1 mm 0 cm
20 Dec. Freezing fog
Freezing fog
 -28° /-37° 0 mm 0 cm
21 Dec. Freezing fog
Freezing fog
 -28° /-39° 0 mm 0 cm
22 Dec. Freezing fog
Freezing fog
 -25° /-34° 0 mm 0 cm
23 Dec. Moderate snow
Moderate snow
 -24° /-34° 0.7 mm 0.5 cm
24 Dec. Light snow
Light snow
 -21° /-33° 0.3 mm 0.2 cm
25 Dec. Freezing fog
Freezing fog
 -28° /-39° 0 mm 0 cm
26 Dec. Mist
Mist
 -18° /-29° 0.3 mm 0.2 cm
27 Dec. Overcast
Overcast
 -2° /-7° 0.1 mm 0.1 cm
28 Dec. Partly cloudy
Partly cloudy
 -6° /-10° 0 mm 0 cm
29 Dec. Mist
Mist
 -7° /-11° 0 mm 0 cm
30 Dec. Mist
Mist
 -6° /-13° 0 mm 0 cm
31 Dec. Partly cloudy
Partly cloudy
 -8° /-15° 0 mm 0 cm
Next
Important Notice
Our weather forecast for Fort St. John 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 Fort St. John forecast closer to your planned date for the most up-to-date weather information.
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Fort St. John in December - FAQ

What are the expected maximum and minimum temperatures in Fort St. John during December?
Brace for cold days with temperatures not exceeding -3° and nights that are likely to be freezing. Winter clothing is essential for comfort and safety.
How much rainfall should be expected in Fort St. John during December?
Moderate rainfall is anticipated in Fort St. John during December, with a total of 57.8 mm spread over approximately 0 days. Considering plans for rainy days is advisable.
Will it snow in Fort St. John in December 2025?
Fort St. John experiences an average snowfall of 41.5 cm during December, occurring over 9 days.
What are the typical wind conditions in Fort St. John during December?
The average wind speed in Fort St. John during December is 16 km/h, suggesting breezy to windy conditions, depending on your activities.

Fort St. John snow forecast December 2025

Track daily snowfall levels and discover Fort St. John’s snowy potential this December ❄️
On average, Fort St. John sees 9 snowy days during December, with approximately 41.5 cm of total snowfall.

December rainfall patterns in Fort St. John

Explore the daily rainfall trends and prepare for Fort St. Johns December weather 💧

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Location coordinates Where is Fort St. John?

Get accurate weather forecasts for Fort St. John, located at latitude 56.25 and longitude -120.853. Stay updated with localized weather information tailored for Fort St. John.

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