December weather forecast
Denver, CO

The colorful sky above the sunlit Denver city, Colorado in autumn
The colorful sky above the sunlit Denver city, Colorado in autumn

Weather in December

December, the first month of the winter in Denver, is also a wintry month, with temperature in the range of an average high of 39.9°F (4.4°C) and an average low of 20.7°F (-6.3°C).

Temperature

With an average high-temperature of 39.9°F (4.4°C) and an average low-temperature of 20.7°F (-6.3°C), December is the coldest month.

Humidity

In December, the average relative humidity in Denver is 61%.

Rainfall

January and December are months with the least rain in Denver when the rain falls for 4.3 days and typically aggregates up to 0.39" (10mm) of rain.

Snowfall

Months with snowfall in Denver, Colorado, are January through May, October through December. In Denver, during 7 snowfall days, 3.31" (84mm) of snow is typically accumulated. Throughout the year, in Denver, Colorado, there are 43.5 snowfall days, and 35.67" (906mm) of snow is accumulated.

Daylight

December has the shortest days of the year in Denver, with an average of 9h and 25min of daylight.
On the first day of December in Denver, sunrise is at 7:02 am and sunset at 4:36 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 4:45 pm MST.

Sunshine

In December, the average sunshine is 7.1h.

UV index

The months with the lowest UV index in Denver are January, February, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for average individuals.
Note: In December, the average maximum UV index of 2 translate into the following recommendations:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
[Resources]

FAQ

What is the coldest month in Denver?

With an average high-temperature of 39.9°F (4.4°C) and an average low-temperature of 20.7°F (-6.3°C), December is the coldest month in Denver, Colorado.

What is the average humidity in December in Denver?

The average relative humidity in December is 61%.

What is the driest month in Denver?

The months with the least rainfall are January and December Rain falls for 4.3 days and accumulates 0.39" (10mm) of rain.

How many days does it rain in December in Denver?

In Denver, Colorado, in December, during 4.3 rainfall days, 0.39" (10mm) of precipitation is typically accumulated.

How many days does it snow in December in Denver?

In Denver, in December, snow falls for 7 days, with typically accumulated 3.31" (84mm) of snow.

What is the month with the shortest days in Denver?

The month with the shortest days is December, with an average of 9h and 25min of daylight.

What is the average length of the day in December in Denver?

In December, the average day length in Denver is 9h and 25min.

When are sunrise and sunset in December in Denver?

On the first day of December in Denver, Colorado, sunrise is at 7:02 am and sunset at 4:36 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 4:45 pm MST.

How long on average sun shines in December in Denver?

In Denver, Colorado, the average sunshine duration in December is 7.1h.

What are the months with the lowest UV index in Denver?

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

What is the UV index reading in December in Denver?

In Denver, Colorado, the average daily maximum UV index in December is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Denver, CO

Average temperature in December - Denver, CO
  • Average high temperature in December: 39.9°F

The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is December (39.9°F).

  • Average low temperature in December: 20.7°F

The month with the highest average low temperature is July (59.2°F).
The coldest month (with the lowest average low temperature) is December (20.7°F).

[Resources]

Average pressure in December
Denver, CO

Average pressure in December - Denver, CO
  • Average pressure in December: 30.12"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is April (29.91"Hg).

[Resources]

Average wind speed in December
Denver, CO

Average wind speed in December - Denver, CO
  • Average wind speed in December: 5.8mph

The windiest month (with the highest average wind speed) is April (6.6mph).
The calmest months (with the lowest average wind speed) are August and September (5.7mph).

[Resources]

Average humidity in December
Denver, CO

Average humidity in December - Denver, CO
  • Average humidity in December: 61%

The month with the highest relative humidity is February (66%).
The month with the lowest relative humidity is June (41%).

[Resources]

Average rainfall in December
Denver, CO

Average rainfall in December - Denver, CO
  • Average rainfall in December: 0.39"

The wettest month (with the highest rainfall) is May (2.36").
The driest months (with the least rainfall) are January and December (0.39").

[Resources]

Average rainfall days in December
Denver, CO

Average rainfall days in December - Denver, CO
  • Average rainfall days in December: 4.3 days

The month with the highest number of rainy days is July (18.4 days).
The month with the least rainy days is January (3.7 days).

[Resources]

Average snowfall in December
Denver, CO

Average snowfall in December - Denver, CO
  • Average snowfall in December: 3.31"

The month with the highest snowfall is March (6.26").
The months with the least snowfall are June, July, August and September (0").

[Resources]

Average snowfall days in December
Denver, CO

Average snowfall days in December - Denver, CO
  • Average snowfall days in December: 7 days

The month with the highest number of snowfall days is February (9.3 days).
The months with the least snowfall days are June, July and August (0 days).

[Resources]

Average daylight in December /
Average sunshine in December
Denver, CO

Average daylight in December / Average sunshine in December - Denver, CO
  • Average daylight in December: 9h and 25min

The month with the longest days is June (Average daylight: 14h and 56min).
The month with the shortest days is December (Average daylight: 9h and 25min).

  • Average sunshine in December: 7h and 6min

The months with the most sunshine are June, July and August (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 6h and 54min).

[Resources]

Average sunshine days in December
Denver, CO

Average sunshine days in December - Denver, CO
  • Average sunshine days in December: 22.4 days

The month with the most sunshine days is November (23 days).
The month with the least sunshine days is July (5.6 days).

[Resources]

Average UV index in December
Denver, CO

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

The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

[Resources]

Average cloud cover in December
Denver, CO

Average cloud cover in December - Denver, CO
  • Average cloud cover in December: 21

The month with the most cloud cover is April (Cloud cover 26).
The month with the least cloud cover is September (Cloud cover 15).

[Resources]

Average visibility in December
Denver, CO

Average visibility in December - Denver, CO
  • Average visibility in December: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

[Resources]

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location
* you will be automatically redirected to the weather forecast for your location