Denver weather in December 2025

Expect daytime maximum temperatures of 45°F in Denver, Colorado in December based on long-term weather averages. There are 6 hours of sunshine per day on average, which might fall as snow.

  • 45°F maximum daytime temperature in December in Denver45
    45°F max day temperature
  • 6 hours of sunshine per day
  • 6 days with some rainfall in December in Denver6
    6 days with some rainfall
  • 18°F minimum night-time temperature in December in Denver18
    18°F min night temperature
  • 9 hours of daylight per day in December in Denver9
    9 hours of daylight per day
  • No heat & humidity in December in Denver0
    No heat & humidity
  • 0.6 inches monthly rainfall in December in Denver0.6
    0.6 inches of monthly rainfall
  • UV (maximum) index 2 (Low) in December in Denver2
    2 (Low) UV index

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The December weather guide for Colorado (Denver) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C)  |  Imperial (°F)

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How cold is it in Denver in December?

Daytime temperatures usually reach 45°F in Denver in December, falling to 18°F at night.

How sunny is it in Denver in December?

There are normally 6 hours of bright sunshine each day in Denver in December - that's 67% of daylight hours.

Does it rain in Denver in December?

There are usually 6 days with some rain in Denver in December and the average monthly rainfall is 0.6 inches. Rain may fall as snow in this month.

Denver December sunrise & sunset times

Browse the sunrise and sunset times for Denver in December 2025. Select a month to view Denver sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st December 2025 07:02 16:36
Tuesday, 16th December 2025 07:15 16:37
Wednesday, 31st December 2025 07:21 16:46

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