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Weather in Boulder County for January 2026

Your guide to Boulder County weather in January - trends and predictions

    Snow Forecast ❄️

  • With an average of 4 snowy days, Boulder County usually enjoys a light touch of snow in January.

  • Temperatures

  • In general, the average temperature in Boulder County at the beginning of January is 1.3 °F. As the month progressed, temperatures tended to slightly decrease, reaching an average of 1.1 °F by the end of January.

  • More

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

Average dry days
18
Dry days
Average rainy days
9
Rainy days
Average snowy days
4
Snow days
Average temperatures
1°/-10°
Temperatures
Average wind speed
16 km/h
Avg max wind
Average humidity
58 %
Avg humidity

Boulder County Weather January

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Temperatures trend during January in Boulder County

See the weather trend as well as the moving average line

January weather day by day

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Date Weather Temperatures Rain Snow More
Jan. 1 Overcast
Overcast
2° /-7° 0.5 mm 0 cm
Jan. 2 Light freezing rain
Light freezing rain
5° /-5° 0.7 mm 0 cm
Jan. 3 Sunny
Sunny
7° /-3° 0 mm 0 cm
Jan. 4 Light freezing rain
Light freezing rain
1° /-4° 0.1 mm 0 cm
Jan. 5 Light freezing rain
Light freezing rain
-1° /-9° 0.5 mm 0 cm
Jan. 6 Cloudy
Cloudy
-1° /-5° 0.9 mm 0 cm
Jan. 7 Patchy moderate snow
Patchy moderate snow
-4° /-13° 3.9 mm 1.2 cm
Jan. 8 Sunny
Sunny
2° /-15° 0 mm 0 cm
Jan. 9 Light freezing rain
Light freezing rain
0° /-9° 1.3 mm 0 cm
Jan. 10 Cloudy
Cloudy
2° /-12° 0 mm 0 cm
Jan. 11 Cloudy
Cloudy
3° /-5° 0 mm 0 cm
Jan. 12 Overcast
Overcast
0° /-10° 0 mm 0 cm
Jan. 13 Sunny
Sunny
0° /-12° 0 mm 0 cm
Jan. 14 Sunny
Sunny
3° /-9° 0 mm 0 cm
Jan. 15 Sunny
Sunny
7° /-7° 0 mm 0 cm
Jan. 16 Sunny
Sunny
11° /-2° 0 mm 0 cm
Jan. 17 Light freezing rain
Light freezing rain
6° /-8° 3.5 mm 1.8 cm
Jan. 18 Light freezing rain
Light freezing rain
-9° /-14° 3 mm 1.1 cm
Jan. 19 Cloudy
Cloudy
-10° /-20° 1 mm 0 cm
Jan. 20 Overcast
Overcast
-14° /-22° 1.2 mm 0 cm
Jan. 21 Cloudy
Cloudy
0° /-20° 0 mm 0 cm
Jan. 22 Overcast
Overcast
-2° /-12° 0 mm 0 cm
Jan. 23 Sunny
Sunny
0° /-13° 0 mm 0 cm
Jan. 24 Light freezing rain
Light freezing rain
3° /-9° 0.4 mm 0 cm
Jan. 25 Patchy moderate snow
Patchy moderate snow
-7° /-13° 5.8 mm 2.2 cm
Jan. 26 Light freezing rain
Light freezing rain
-5° /-14° 0.5 mm 0 cm
Jan. 27 Sunny
Sunny
2° /-13° 0 mm 0 cm
Jan. 28 Sunny
Sunny
2° /-11° 0 mm 0 cm
Jan. 29 Cloudy
Cloudy
0° /-11° 0 mm 0 cm
Jan. 30 Cloudy
Cloudy
6° /-6° 0.1 mm 0 cm
Jan. 31 Partly cloudy
Partly cloudy
10° /-3° 0 mm 0 cm
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Important Notice
Our weather forecast for Boulder County in January 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.

Boulder County in January - FAQ

What are the expected maximum and minimum temperatures in Boulder County during January?
Brace for cold days with temperatures not exceeding 1° and nights that are likely to be freezing. Winter clothing is essential for comfort and safety.
How much rainfall should be expected in Boulder County during January?
In January, Boulder County can expect light to moderate rainfall, totaling 23.4 mm across approximately 9 days. Occasional showers are possible, and planning ahead for them could be helpful.
Will it snow in Boulder County in January 2026?
Boulder County experiences an average snowfall of 6.3 cm during January, occurring over 4 days.
What are the typical wind conditions in Boulder County during January?
The average wind speed in Boulder County during January is 16 km/h, suggesting breezy to windy conditions, depending on your activities.

Boulder County snow forecast January 2026

Track daily snowfall levels and discover Boulder County’s snowy potential this January ❄️

January rainfall patterns in Boulder County

Explore the daily rainfall trends and prepare for Boulder Countys January weather 💧
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Location coordinates Where is Boulder County?

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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