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United States weather

Weather in Fort Collins, Colorado for December 2025

Your guide to Fort Collins weather in December - trends and predictions

    Snow Forecast ❄️

  • With an average of 5 snowy days, Fort Collins usually enjoys a light touch of snow in December.
    According to Fort Collins snow forecast for December 2025, 2 snowy days are expected until the end of the month. The closest date with snow is Monday, December 29.

    • Temperatures

  • Until now, December 2025 in Fort Collins has been nearly identical to the historical average, with a temperature of 7.8 °F (showing only a slight deviation of 0.2 °F).

  • The forecast for the next days in Fort Collins predicts temperatures to be around 11 °F, close to the historical average.

  • In general, the average temperature in Fort Collins at the beginning of December is 7.4 °F. As the month progressed, temperatures tended to noticeably warm up, reaching an average of 9.9 °F by the end of December.

    • More

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

Average dry days
26
Dry days
Average rainy days
0
Rainy days
Average snowy days
5
Snow days
Average temperatures
7°/-2°
Temperatures
Average wind speed
16 km/h
Avg max wind
Average humidity
49 %
Avg humidity

Fort Collins Weather December

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

Temperatures trend during December in Fort Collins

See the weather trend as well as the moving average line

December weather in Fort Collins day by day

Click on a date for more information
November January
Date Weather Temperatures Rain Snow More
Dec. 1 Sunny
Sunny
 4° /-6° 0.5 mm 0.5 cm
Dec. 2 Partly cloudy
Partly cloudy
 6° /-5° 0 mm 0 cm
Dec. 3 Overcast
Overcast
 5° /-4° 1.1 mm 0.8 cm
Dec. 4 Overcast
Overcast
 8° /-4° 0 mm 0 cm
Dec. 5 Sunny
Sunny
 10° /-2° 0 mm 0 cm
Dec. 6 Sunny
Sunny
 10° /-1° 0 mm 0 cm
Dec. 7 Sunny
Sunny
 9° /-1° 0 mm 0 cm
Dec. 8 Light snow showers
Light snow showers
 6° /-3° 0.3 mm 0.2 cm
Dec. 9 Overcast
Overcast
 5° /-3° 0 mm 0 cm
Dec. 10 Overcast
Overcast
 7° /-4° 0 mm 0 cm
Dec. 11 Patchy rain possible
Patchy rain possible
 9° /-1° 0 mm 0 cm
Dec. 12 Light snow showers
Light snow showers
 5° /-1° 0.3 mm 0.3 cm
Dec. 13 Overcast
Overcast
 7° /-1° 0 mm 0 cm
Dec. 14 Partly cloudy
Partly cloudy
 8° /-2° 0 mm 0 cm
Dec. 15 Partly cloudy
Partly cloudy
 10° /0° 0 mm 0 cm
Dec. 16 Sunny
Sunny
 9° /-2° 0 mm 0 cm
Dec. 17 Sunny
Sunny
 10° /-1° 0 mm 0 cm
Dec. 18 Overcast
Overcast
 6° /-3° 0 mm 0 cm
Dec. 19 Partly cloudy
Partly cloudy
 11° /1° 0 mm 0 cm
Dec. 20 Overcast
Overcast
 10° /1° 0 mm 0 cm
Dec. 21 Mist
Mist
 10° /-5° 0 mm 0 cm
Dec. 22 Sunny
Sunny
 16° /-1° 0 mm 0 cm
Dec. 23 Sunny
Sunny
 13° /1° 0 mm 0 cm
Dec. 24 Partly cloudy
Partly cloudy
 16° /4° 0 mm 0 cm
Dec. 25 Sunny
Sunny
 14° /3° 0 mm 0 cm
Dec. 26 Sunny
Sunny
 12° /1° 0 mm 0 cm
Dec. 27 Sunny
Sunny
 12° /2° 0 mm 0 cm
Dec. 28 Partly cloudy
Partly cloudy
 13° /2° 0 mm 0 cm
Dec. 29 Patchy rain possible
Patchy rain possible
 5° /1° 4.7 mm 2.5 cm
Dec. 30 Light freezing rain
Light freezing rain
 5° /-2° 0.2 mm 0.1 cm
Dec. 31 Sunny
Sunny
 8° /-4° 0 mm 0 cm
Next
Important Notice
Our weather forecast for Fort Collins 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 Collins forecast closer to your planned date for the most up-to-date weather information.
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Fort Collins in December - FAQ

What are the expected maximum and minimum temperatures in Fort Collins during December?
Prepare for cooler days with highs just around 7° and colder nights, dipping below -2°.
How much rainfall should be expected in Fort Collins during December?
Rainfall in Fort Collins during December is rare to nonexistent, with the total expected rainfall being less than 10 mm and approximately 0 days seeing any precipitation. Planning without the concern for rain is generally straightforward during this very dry period.
Will it snow in Fort Collins in December 2025?
Fort Collins experiences an average snowfall of 2.95 cm during December, occurring over 5 days.
What are the typical wind conditions in Fort Collins during December?
The average wind speed in Fort Collins during December is 16 km/h, suggesting breezy to windy conditions, depending on your activities.

Fort Collins snow forecast December 2025

Track daily snowfall levels and discover Fort Collins’s snowy potential this December ❄️
On average, Fort Collins sees 5 snowy days during December, with approximately 3 cm of total snowfall.

December rainfall patterns in Fort Collins

Explore the daily rainfall trends and prepare for Fort Collinss December weather 💧

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Location coordinates Where is Fort Collins?

Get accurate weather forecasts for Fort Collins, located at latitude 40.585 and longitude -105.084. Stay updated with localized weather information tailored for Fort Collins.

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