Denver Weather in January

While January is the midst of a long winter at Denver, Colorado most days this month, there's less than an inch (2.5 cm) of snow on the ground.

This page gives detailed information on the typical January temperature, precipitation, snow, sun, humidity, wind and storms for Denver. The numbers here are historical averages based on climate data gathered in the Denver community of Stapleton.

Temperature Weather iconTemperature

47 °F January average high 8 °C
18 °F January average low -8 °C
13 days 50 °F max. or more (10 °C)
17 days 20 °F min. or less (-8 °C)

Denver averages 4 days in January when the thermometer reaches into the 60s Fahrenheit (over 16 degrees Celsius). The temperatures climbs into the 70s °F (over 21 °C) once every few years. Typically on 5 days the mercury remains below freezing for the entire day.

Nearly every night in Denver during January is below freezing. The thermometer dips to 0 °F (-18 °C) or lower on an average of 2 nights.

Rainy Weather iconPrecipitation

0.5 in total precipitation 12 mm
5 days of rain or snowfall

Half the time, Denver receives 0.2 to 0.6 inches (6 to 15 mm) of precipitation in January. One in four years has drier weather, while another one in four is wetter.

Snowy Weather iconSnow

6.4 in total snowfall 16 cm
5 days with new snow

January's snowfall varies a lot from year to year in Denver. Between 3 and 8.4 inches (8 to 21 cm) of fresh snow arrives in half the years. Less new snow lands in one out of four Januaries, while another twenty-five percent are snowier.

Denver typically has at least an inch (2.5 cm) of snow on the ground for 10 days this month. The snow normally accumulates to 5 inches (13 cm) or deeper on 2 days.

Sunny Weather iconSun

71 % sunshine
10 days clear skies

The sun's rays reach the ground in Denver during 71 percent of daylight hours on average in January, for a total of 214 hours in the month. Typically on 10 days this month the sky is mainly clear, with at most 30 percent cloud cover.

Sunlight in January at Denver lasts for 9 hours and 44 minutes a day on average. The shortest day of the month is the 1st with 9 hours and 26 minutes of daylight. By the end of the month, the days have lengthened to 10:10 from sunrise to sunset. These durations can vary by a minute or two from year to year.

Humid Weather iconHumidity

55 % January average humidity

The relative humidity in Denver during January usually peaks at 63 percent in the early morning then drops to 40 percent by early afternoon.

Local Time2 am5 am8 am11 am2 pm5 pm8 pm11 pm
Humidity % 63 63 61 45 40 49 59 63

Windy Weather iconWind

8.7 mph January wind speed average 14.0 kph

January is an average month in Denver for wind speed.

Stormy Weather iconStorms

2 days snowfall of 1 inch (2.5 cm) or more
0 days with thunderstorms in January

About once a decade, a January snowstorm blankets Denver with ten inches (25 cm) or more of snow in one day.


The weather data here are long-term averages provided by the US National Centers for Environmental Information (NCEI). Temperature and precipitation are 1991-2020 normals while humidity and thunderstorms are 1961-1990 normals.

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