Denver
Colorado, USA
Long-term weather forecast
Long-term weather forecast
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December weather forecast and Climate
Denver, CO

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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 around 17°F (-8.3°C) and the average high temperature around 43°F (6.1°C).
Snowfall is around 8.5" (215.9mm), but there are a few days, which 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.
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  • The 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).

  • The 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).

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  • The 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%).

  • The 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").

  • The 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).

  • The 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").

  • The 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).

  • The average daylight in December: 9h

Months with the longest days are June and July (Average daylight: 15h).
The month with shortest days is December (Average daylight: 9h).

  • The 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).

  • The 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).

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