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San Juan County (Silverton)
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United States weather

Weather in San Juan County, Colorado for December 2025

Your guide to San Juan County weather in December - trends and predictions

    Snow Forecast ❄️

  • San Juan County typically experiences moderate snowfall in December, with an average of 6 snowy days.
    According to San Juan County snow forecast for December 2025, 5 snowy days are expected until the end of the month. The closest date with snow is Wednesday, December 24.

    • Temperatures

  • Until now, December 2025 in San Juan County has been nearly identical to the historical average, with a temperature of -2.5 °F (showing only a slight deviation of -0.1 °F).

  • The forecast for the upcoming days in San Juan County predicts a temperature of 3.7 °F, which is slightly above the historical average.

  • In general, the average temperature in San Juan County at the beginning of December is -3.4 °F. As the month progressed, temperatures tended to significantly warm up, reaching an average of 3.6 °F by the end of December.

    • More

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Average dry days
22
Dry days
Average rainy days
3
Rainy days
Average snowy days
6
Snow days
Average temperatures
-3°/-12°
Temperatures
Average wind speed
10 km/h
Avg max wind
Average humidity
62 %
Avg humidity

San Juan 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
-2°
3
Overcast
-3°
4
Overcast
-3°
5
Cloudy
-5°
6
Partly cloudy
-3°
7
Cloudy
-4°
8
Sunny
-3°
9
Moderate or heavy snow showers
-6°
10
Overcast
-7°
11
Sunny
0°
12
Cloudy
0°
13
Light freezing rain
-4°
14
Light freezing rain
2°
15
Light freezing rain
-2°
16
Cloudy
-0°
17
Overcast
-2°
18
Sunny
-2°
19
Partly cloudy
1°
20
Sunny
1°
21
Sunny
3°
22
Sunny
3°
23
Overcast
1°
24
Patchy heavy snow
1°
25
Moderate or heavy snow showers
6°
26
Patchy moderate snow
5°
27
Partly cloudy
6°
28
Patchy rain possible
5°
29
Moderate or heavy snow showers
2°
30
Cloudy
-1°
31
Sunny
2°

Temperatures trend during December in San Juan County

See the weather trend as well as the moving average line

December weather in San Juan County day by day

Click on a date for more information
November January
Date Weather Temperatures Rain Snow More
Dec. 1 Sunny
Sunny
 -4° /-11° 9.5 mm 6.9 cm
Dec. 2 Sunny
Sunny
 -2° /-10° 0 mm 0 cm
Dec. 3 Overcast
Overcast
 -3° /-12° 3.3 mm 2.4 cm
Dec. 4 Overcast
Overcast
 -3° /-12° 3.8 mm 2.7 cm
Dec. 5 Cloudy
Cloudy
 -5° /-12° 0 mm 0 cm
Dec. 6 Partly cloudy
Partly cloudy
 -3° /-9° 11.1 mm 7 cm
Dec. 7 Cloudy
Cloudy
 -4° /-14° 0 mm 0 cm
Dec. 8 Sunny
Sunny
 -3° /-10° 0 mm 0 cm
Dec. 9 Moderate or heavy snow showers
Moderate or heavy snow showers
 -6° /-15° 5.1 mm 3.1 cm
Dec. 10 Overcast
Overcast
 -7° /-14° 0 mm 0 cm
Dec. 11 Sunny
Sunny
 0° /-12° 0 mm 0 cm
Dec. 12 Cloudy
Cloudy
 0° /-7° 0 mm 0 cm
Dec. 13 Light freezing rain
Light freezing rain
 -4° /-8° 0.5 mm 0 cm
Dec. 14 Light freezing rain
Light freezing rain
 2° /-9° 0.1 mm 0 cm
Dec. 15 Light freezing rain
Light freezing rain
 -2° /-7° 0.1 mm 0 cm
Dec. 16 Cloudy
Cloudy
 0° /-8° 0 mm 0 cm
Dec. 17 Overcast
Overcast
 -2° /-8° 0 mm 0 cm
Dec. 18 Sunny
Sunny
 -2° /-11° 1.5 mm 1 cm
Dec. 19 Partly cloudy
Partly cloudy
 1° /-6° 0 mm 0 cm
Dec. 20 Sunny
Sunny
 1° /-6° 0 mm 0 cm
Dec. 21 Sunny
Sunny
 3° /-2° 0 mm 0 cm
Dec. 22 Sunny
Sunny
 3° /-1° 0 mm 0 cm
Dec. 23 Overcast
Overcast
 1° /-5° 0 mm 0 cm
Dec. 24 Patchy heavy snow
Patchy heavy snow
 1° /-5° 6.4 mm 4.5 cm
Dec. 25 Moderate or heavy snow showers
Moderate or heavy snow showers
 6° /-5° 4.9 mm 3.1 cm
Dec. 26 Patchy moderate snow
Patchy moderate snow
 5° /-7° 0.5 mm 0.4 cm
Dec. 27 Partly cloudy
Partly cloudy
 6° /-9° 0 mm 0 cm
Dec. 28 Patchy rain possible
Patchy rain possible
 5° /-8° 6.1 mm 2.6 cm
Dec. 29 Moderate or heavy snow showers
Moderate or heavy snow showers
 2° /-10° 4.5 mm 3.2 cm
Dec. 30 Cloudy
Cloudy
 -1° /-15° 0 mm 0 cm
Dec. 31 Sunny
Sunny
 2° /-15° 0 mm 0 cm
Next
Important Notice
Our weather forecast for San Juan 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 San Juan County forecast closer to your planned date for the most up-to-date weather information.
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San Juan County in December - FAQ

What are the expected maximum and minimum temperatures in San Juan County 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 San Juan County during December?
Moderate rainfall is anticipated in San Juan County during December, with a total of 52.7 mm spread over approximately 3 days. Considering plans for rainy days is advisable.
Will it snow in San Juan County in December 2025?
San Juan County experiences an average snowfall of 29 cm during December, occurring over 6 days.
What are the typical wind conditions in San Juan County during December?
The average wind speed in San Juan County during December is 10 km/h, suggesting breezy to windy conditions, depending on your activities.

San Juan County snow forecast December 2025

Track daily snowfall levels and discover San Juan County’s snowy potential this December ❄️
On average, San Juan County sees 6 snowy days during December, with approximately 29 cm of total snowfall.

December rainfall patterns in San Juan County

Explore the daily rainfall trends and prepare for San Juan Countys December weather 💧
Typically, San Juan County has 3 rainy days in December with a total of 52.7 mm of rainfall.
Top locations in San Juan County
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Oljato-Monument ValleySilverton
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Location coordinates Where is San Juan County?

Get accurate weather forecasts for San Juan County, located at latitude 37.812 and longitude -107.665. Stay updated with localized weather information tailored for San Juan County.

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