January Weather in Denver, United States

Last updated: June 24, 2025

In January, the average temperature in Denver, United States hovers around 6°C (43°F), with a minimum dip to -13°C (9°F) and a warm maximum of 24°C (76°F). Expect 90 mm (3.5 in) of precipitation over 9 days, contributing to an average humidity of 86%—perfect for those cozy indoor activities!

January Temperature in Denver

In January in Denver, the average temperature is 6°C (43°F). Maximum can reach 24°C (76°F) and minimum can be as low as -13°C (9°F). Travelers should be prepared for a wide range of temperatures, from chilly to pleasantly warm.

January Weather in Denver: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Denver, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Denver, January typically has an average temperature of 6°C (43°F), with highs reaching up to 24°C (76°F) and lows dropping to around -13°C (9°F).

Data source: Temperature data for Denver generated using information from the Copernicus Climate Change Service.

January Precipitation in Denver

In Denver in January, the precipitation amount is 90 mm (3.5 in) over the course of 9 days.

January Precipitation Trends in Denver

The chart displays monthly precipitation patterns in Denver, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Denver, January typically receives around 90 mm (3.5 inches) of precipitation spread over approximately 9 days.

Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

January Humidity in Denver

In Denver in January humidity is 86%. With an average temperature of 6°C (43°F), this humidity feels like a chilling blanket enveloping you, making outdoor exploration feel damp and uncomfortable.

January Average Humidity in Denver

This chart illustrates the average monthly humidity levels in Denver, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Denver is approximately 86%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Denver

In Denver in January, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Denver for better planning.

Maximum UV Index Levels in Denver for January

The chart shows the monthly maximum UV Index (UVI) for Denver in January, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In January, the maximum UV index in Denver typically reaches 4, which falls under the moderate exposure category.

Data source: Denver January UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How January Weather in Denver Compares to Other Months

Weather in Denver varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Denver, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Denver, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	6°C (43°F)	90 mm (3.5 inches)	86%	moderate
February Weather	9°C (48°F)	116 mm (4.6 inches)	85%	high
March Weather	12°C (53°F)	87 mm (3.4 inches)	84%	very high
April Weather	16°C (62°F)	111 mm (4.4 inches)	82%	very high
May Weather	21°C (70°F)	119 mm (4.7 inches)	83%	very high
June Weather	25°C (77°F)	79 mm (3.1 inches)	82%	extreme
July Weather	27°C (81°F)	88 mm (3.5 inches)	80%	extreme
August Weather	26°C (79°F)	103 mm (4.0 inches)	74%	very high
September Weather	23°C (74°F)	128 mm (5.0 inches)	75%	very high
October Weather	18°C (65°F)	107 mm (4.2 inches)	79%	very high
November Weather	10°C (51°F)	87 mm (3.4 inches)	87%	moderate
December Weather	8°C (46°F)	119 mm (4.7 inches)	87%	moderate