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United States weather

Weather in Summit County, Colorado for December 2025

Your guide to Summit County weather in December - trends and predictions

    Snow Forecast ❄️

  • Summit County typically experiences moderate snowfall in December, with an average of 8 snowy days.
    According to Summit County snow forecast for December 2025, 4 snowy days are expected until the end of the month. The closest date with snow is Thursday, December 25.

    • Temperatures

  • Until now, December 2025 in Summit County is slightly cooler than the historical average by -0.9 °F.

  • The forecast for the next days in Summit County predicts temperatures to be around 1 °F, close to the historical average.

  • In general, the average temperature in Summit County at the beginning of December is -2.7 °F. As the month progressed, temperatures tended to noticeably warm up, reaching an average of -0.1 °F by the end of December.

    • More

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Average dry days
23
Dry days
Average rainy days
0
Rainy days
Average snowy days
8
Snow days
Average temperatures
-2°/-11°
Temperatures
Average wind speed
11 km/h
Avg max wind
Average humidity
69 %
Avg humidity

Summit County Weather December

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

Temperatures trend during December in Summit County

See the weather trend as well as the moving average line

December weather in Summit County day by day

Click on a date for more information
November January
Date Weather Temperatures Rain Snow More
Dec. 1 Sunny
Sunny
 -4° /-13° 1.8 mm 1.3 cm
Dec. 2 Sunny
Sunny
 -1° /-13° 0 mm 0 cm
Dec. 3 Overcast
Overcast
 -3° /-13° 7.5 mm 4.4 cm
Dec. 4 Sunny
Sunny
 -2° /-11° 0 mm 0 cm
Dec. 5 Overcast
Overcast
 -4° /-10° 5.3 mm 3.8 cm
Dec. 6 Sunny
Sunny
 -2° /-10° 24.2 mm 9.6 cm
Dec. 7 Sunny
Sunny
 -3° /-12° 0 mm 0 cm
Dec. 8 Sunny
Sunny
 -3° /-10° 0 mm 0 cm
Dec. 9 Light snow
Light snow
 -7° /-16° 0.2 mm 0.1 cm
Dec. 10 Overcast
Overcast
 -6° /-14° 0.1 mm 0 cm
Dec. 11 Light freezing rain
Light freezing rain
 -1° /-12° 0 mm 0 cm
Dec. 12 Partly cloudy
Partly cloudy
 0° /-9° 0 mm 0 cm
Dec. 13 Moderate snow
Moderate snow
 -2° /-10° 0.7 mm 0.4 cm
Dec. 14 Partly cloudy
Partly cloudy
 1° /-10° 0 mm 0 cm
Dec. 15 Freezing fog
Freezing fog
 -2° /-11° 0 mm 0 cm
Dec. 16 Partly cloudy
Partly cloudy
 -1° /-12° 0 mm 0 cm
Dec. 17 Sunny
Sunny
 -1° /-9° 6.1 mm 1.1 cm
Dec. 18 Partly cloudy
Partly cloudy
 -2° /-13° 0.4 mm 0.3 cm
Dec. 19 Sunny
Sunny
 1° /-8° 0.7 mm 0 cm
Dec. 20 Overcast
Overcast
 1° /-8° 0 mm 0 cm
Dec. 21 Sunny
Sunny
 4° /-5° 0 mm 0 cm
Dec. 22 Sunny
Sunny
 4° /-4° 0 mm 0 cm
Dec. 23 Sunny
Sunny
 4° /-5° 0 mm 0 cm
Dec. 24 Sunny
Sunny
 3° /-6° 0 mm 0 cm
Dec. 25 Patchy moderate snow
Patchy moderate snow
 1° /-6° 0.5 mm 0.4 cm
Dec. 26 Light freezing rain
Light freezing rain
 -1° /-7° 0.2 mm 0.2 cm
Dec. 27 Sunny
Sunny
 2° /-9° 0 mm 0 cm
Dec. 28 Sunny
Sunny
 4° /-6° 0 mm 0 cm
Dec. 29 Moderate or heavy snow with thunder
Moderate or heavy snow with thunder
 -3° /-11° 5.7 mm 4 cm
Dec. 30 Freezing fog
Freezing fog
 -4° /-13° 0.1 mm 0 cm
Dec. 31 Sunny
Sunny
 0° /-15° 0 mm 0 cm
Next
Important Notice
Our weather forecast for Summit County 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 Summit County forecast closer to your planned date for the most up-to-date weather information.
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Summit County in December - FAQ

What are the expected maximum and minimum temperatures in Summit County 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 Summit County during December?
In December, Summit County can expect light to moderate rainfall, totaling 37.1 mm across approximately 0 days. Occasional showers are possible, and planning ahead for them could be helpful.
Will it snow in Summit County in December 2025?
Summit County experiences an average snowfall of 20.07 cm during December, occurring over 8 days.
What are the typical wind conditions in Summit County during December?
The average wind speed in Summit County during December is 11 km/h, suggesting breezy to windy conditions, depending on your activities.

Summit County snow forecast December 2025

Track daily snowfall levels and discover Summit County’s snowy potential this December ❄️
On average, Summit County sees 8 snowy days during December, with approximately 20.1 cm of total snowfall.

December rainfall patterns in Summit County

Explore the daily rainfall trends and prepare for Summit Countys December weather 💧
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AkronBreckenridgePark City
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Location coordinates Where is Summit County?

Get accurate weather forecasts for Summit County, located at latitude 39.482 and longitude -106.038. Stay updated with localized weather information tailored for Summit County.

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