Boulder County (Boulder)
December
Weather in Boulder County, Colorado for December 2026
Your guide to Boulder County weather in December - trends and predictions
With an average of 2 snowy days, Boulder County usually enjoys a light touch of snow in December.
In general, the average temperature in Boulder County at the beginning of December is 6.1 °C. As the month progressed, temperatures tended to moderately rise, reaching an average of 7 °C by the end of December.
Precipitation in Boulder County during December is a rare event, with an average of fewer than 2 rainy days.
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Snow Forecast ❄️
Temperatures
Rain 🌧️
More
29
Dry days
0
Rainy days
2
Snow days
8°/0°
Temperatures
23 km/h
Avg max wind
46 %
Avg humidity
Boulder County Weather December
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Temperatures trend during December in Boulder County
See the weather trend as well as the moving average line
December weather in Boulder County day by day
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| Date | Weather | Temperatures | Rain | Snow | More |
|---|---|---|---|---|---|
| Dec. 1 | Sunny | 5° /-5° | 0 mm | 0 cm | |
| Dec. 2 | Sunny | 6° /-3° | 0 mm | 0 cm | |
| Dec. 3 | Sunny | 5° /-4° | 8.9 mm | 6.5 cm | |
| Dec. 4 | Sunny | 5° /-3° | 0 mm | 0 cm | |
| Dec. 5 | Partly cloudy | 6° /-1° | 0 mm | 0 cm | |
| Dec. 6 | Sunny | 8° /-2° | 0 mm | 0 cm | |
| Dec. 7 | Sunny | 8° /-1° | 0 mm | 0 cm | |
| Dec. 8 | Overcast | 8° /0° | 0 mm | 0 cm | |
| Dec. 9 | Cloudy | 5° /-3° | 0 mm | 0 cm | |
| Dec. 10 | Sunny | 3° /-3° | 0 mm | 0 cm | |
| Dec. 11 | Patchy rain possible | 8° /-1° | 0 mm | 0 cm | |
| Dec. 12 | Overcast | 8° /0° | 0 mm | 0 cm | |
| Dec. 13 | Overcast | 9° /0° | 0 mm | 0 cm | |
| Dec. 14 | Sunny | 13° /0° | 0 mm | 0 cm | |
| Dec. 15 | Sunny | 12° /3° | 0 mm | 0 cm | |
| Dec. 16 | Sunny | 9° /0° | 0 mm | 0 cm | |
| Dec. 17 | Cloudy | 9° /2° | 0 mm | 0 cm | |
| Dec. 18 | Overcast | 6° /-3° | 0 mm | 0 cm | |
| Dec. 19 | Sunny | 10° /2° | 0 mm | 0 cm | |
| Dec. 20 | Partly cloudy | 11° /1° | 0 mm | 0 cm | |
| Dec. 21 | Sunny | 12° /3° | 0 mm | 0 cm | |
| Dec. 22 | Overcast | 15° /4° | 0 mm | 0 cm | |
| Dec. 23 | Partly cloudy | 12° /4° | 0 mm | 0 cm | |
| Dec. 24 | Overcast | 11° /2° | 0 mm | 0 cm | |
| Dec. 25 | Overcast | 11° /4° | 0 mm | 0 cm | |
| Dec. 26 | Cloudy | 10° /1° | 0 mm | 0 cm | |
| Dec. 27 | Overcast | 7° /0° | 0 mm | 0 cm | |
| Dec. 28 | Overcast | 2° /-6° | 11.4 mm | 8.2 cm | |
| Dec. 29 | Cloudy | 7° /-3° | 0 mm | 0 cm | |
| Dec. 30 | Cloudy | 7° /-2° | 0 mm | 0 cm | |
| Dec. 31 | Cloudy | 5° /-4° | 0 mm | 0 cm | |
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Important Notice
Our weather forecast for Boulder 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 Boulder County forecast closer to your planned date for the most up-to-date weather information.
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Boulder County in December - FAQ
What are the expected maximum and minimum temperatures in Boulder County during December?
Prepare for cooler days with highs just around 8° and colder nights, dipping below 0°.
How much rainfall should be expected in Boulder County during December?
In December, Boulder County can expect light to moderate rainfall, totaling 20.4 mm across approximately 0 days. Occasional showers are possible, and planning ahead for them could be helpful.
Will it snow in Boulder County in December 2026?
Boulder County experiences an average snowfall of 14.7 cm during December, occurring over 2 days.
What are the typical wind conditions in Boulder County during December?
The average wind speed in Boulder County during December is 23 km/h, suggesting breezy to windy conditions, depending on your activities.
Boulder County snow forecast December 2026
Track daily snowfall levels and discover Boulder County’s snowy potential this December ❄️
On average, Boulder County sees 2 snowy days during December, with approximately 14.7 cm of total snowfall.
December rainfall patterns in Boulder County
Explore the daily rainfall trends and prepare for Boulder Countys December weather 💧
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Get accurate weather forecasts for Boulder County, located at latitude 40.015 and longitude -105.271. Stay updated with localized weather information tailored for Boulder County.
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