Denver
Colorado, USA
Long-term weather forecast
Long-term weather forecast

December weather forecast and climate
Denver, CO

The colorful sky above the sunlit Denver city, Colorado in autumn, with a water body surrounded by trees, and majestic skyscrapers afar
The colorful sky above the sunlit Denver city, Colorado in autumn, with a water body surrounded by trees, and majestic skyscrapers afar
December is the coldest month in Denver with an average low temperature of 17°F (-8.3°C) and the average high temperature of 43°F (6.1°C).
Snowfall measures 8.5" (215.9mm), but there are a few days, that record highs between 50°F (10°C) and 60°F (15.6°C). Though the cold may be severe at times, December sees an average of 9 hours of daily sunlight and a few days with clear skies. Winter receives negligible rain as the majority of Denver lies in the arid zone.
A few visitors gather on the mountain slopes armed with warm winter jackets, gloves, and caps to enjoy the skiing season.

What is the coldest month in Denver?

With an average high-temperature of 42.8°F (6°C) and an average low-temperature of 17.1°F (-8.3°C), December is the coldest month.

What is the temperature in December in Denver?

The average high-temperature, in December, in Denver, Colorado, is 42.8°F (6°C), while the average low-temperature is 17.1°F (-8.3°C).

What is the most humid month in Denver?

December is the most humid month, with an average relative humidity of 56.6%.

What is the average humidity in December in Denver?

The average relative humidity in December in Denver is 56.6%.

How much does it rain in Denver in December?

In Denver, in December, it is raining for 4.1 days, with typically 0.4" (8.9mm) of accumulated precipitation.

What is the driest month in Denver?

December is the month with the least rainfall in Denver. Rain falls for 4.1 days and accumulates 0.4" (8.9mm) of precipitation.

How much does it snow in Denver in December?

In Denver, during December, snow falls for 5.3 days and regularly aggregates up to 8.5" (215.9mm) of snow.

What is the month with the shortest days in Denver?

The month with the shortest days in Denver, Colorado, is December, with an average of 9.4h of daylight.

How many hours of daylight does Denver have in December?

In December, the average length of the day in Denver, Colorado, is 9.4h.

What is the month with the least sunshine in Denver?

With an average of 6.3h of sunshine, December has the least sunshine of the year.

How many hours of sunshine does Denver have in December?

In December, the average sunshine is 6.3h.

What is the month with the lowest UV index in Denver?

January and December, with an average maximum UV index of 2, are months with the lowest UV index in Denver, Colorado.

What is the UV index reading in December in Denver?

In Denver, the average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents a low health risk from unprotected exposure to the UV radiation.
Average temperature in December - Denver, CO
  • Average high temperature in December: 42.8°F

The warmest month (with the highest average high temperature) is July (89.4°F).
The month with the lowest average high temperature is December (42.8°F).

  • Average low temperature in December: 17.1°F

The month with the highest average low temperature is July (58.9°F).
The coldest month (with the lowest average low temperature) is December (17.1°F).

Average humidity in December - Denver, CO
  • Average humidity in December: 56.6%

The month with the highest relative humidity is December (56.6%).
The month with the lowest relative humidity is July (47.8%).

Average rainfall in December - Denver, CO
  • Average rainfall in December: 0.4"

The wettest month (with the highest rainfall) is July (2.2").
Driest months (with the lowest rainfall) are January, February and December (0.4").

Average rainfall days in December - Denver, CO
  • Average rainfall days in December: 4.1 days

The month with the highest number of rainy days is May (9.4 days).
Months with the lowest number of rainy days are January and December (4.1 days).

Average snowfall in December - Denver, CO
  • Average snowfall in December: 8.5"

The month with the highest snowfall is March (10.7").
Months with the lowest snowfall are June, July and August (0").

Average snowfall days in December - Denver, CO
  • Average snowfall days in December: 5.3 days

The month with the highest number of snowfall days is March (5.8 days).
Months with the lowest number of snowfall days are June, July and August (0 days).

Average daylight in December / Average sunshine in December - Denver, CO
  • Average daylight in December: 9.4h

The month with the longest days is June (Average daylight: 15h).
The month with shortest days is December (Average daylight: 9.4h).

  • Average sunshine in December: 6.3h

Months with most sunshine are June and July (Average sunshine: 10.5h).
The month with least sunshine is December (Average sunshine: 6.3h).

Average UV index in December - Denver, CO
  • Average UV index in December: 2

The month with the highest UV index is July (UV index 11).
Months with the lowest UV index are January and December (UV index 2).