Arizona weather in December 2025

Expect daytime maximum temperatures of 66°F in Arizona, USA in December based on long-term weather averages. There are 8 hours of sunshine per day on average.

  • 66°F maximum daytime temperature in December in Arizona (Phoenix)66
    66°F max day temperature
  • 8 hours of sunshine per day
  • 4 days with some rainfall in December in Arizona (Phoenix)4
    4 days with some rainfall
  • 39°F minimum night-time temperature in December in Arizona (Phoenix)39
    39°F min night temperature
  • 10 hours of daylight per day in December in Arizona (Phoenix)10
    10 hours of daylight per day
  • No heat & humidity in December in Arizona (Phoenix)0
    No heat & humidity
  • 1.0 inches monthly rainfall in December in Arizona (Phoenix)1.0
    1.0 inches of monthly rainfall
  • UV (maximum) index 3 (Moderate) in December in Arizona (Phoenix)3
    3 (Moderate) UV index

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The December weather guide for Arizona (Phoenix) 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.

Top Arizona destinations

Below are average maximum temperatures at popular countries, regions and places in Arizona in December. Select a holiday destination to see more weather parameters.

All Arizona destinations

Metric (°C)  |  Imperial (°F)

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More about Arizona

How hot is it in Arizona in December?

Daytime temperatures usually reach 66°F in Phoenix, Arizona in December, falling to 39°F at night.

How sunny is it in Arizona in December?

There are normally 8 hours of bright sunshine each day in Phoenix, Arizona in December - that's 79% of daylight hours.

Does it ever rain in Arizona in December?

There are usually 4 days with some rain in Phoenix, Arizona in December and the average monthly rainfall is 1.0 inches.

Arizona December sunrise & sunset times

Browse the sunrise and sunset times for Arizona in December 2025. Select a month to view Arizona sunrise and sunset times for the next 12 months. The Arizona sunrise and sunset times shown below are for Phoenix.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st December 2025 07:15 17:20
Tuesday, 16th December 2025 07:26 17:23
Wednesday, 31st December 2025 07:32 17:31

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