Arizona (Phoenix)
December
Weather in Arizona for December 2025
Your guide to Arizona weather in December - trends and predictions
Until now, December 2025 in Arizona is slightly cooler than the historical average by -0.6 °F.
The forecast for the upcoming days in Arizona predicts a temperature of 23 °F, which is slightly above the historical average.
In general, the average temperature in Arizona at the beginning of December is 22.6 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 18 °F by the end of December.
Arizona experiences moderate rainfall in December, with an average of 10 rainy days and a total precipitation of 24.7 mm.
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Temperatures
Rain 🌧️
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21
Dry days
10
Rainy days
0
Snow days
19°/9°
Temperatures
10 km/h
Avg max wind
38 %
Avg humidity
Arizona Weather December
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What’s the Weather Like in Arizona This December?
Discover the average temperatures and weather trends across Arizona’s cities this December.
Temperatures trend during December in Arizona
See the weather trend as well as the moving average line
December weather in Arizona day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Dec. 1 |  Sunny | 23° /9° | 1.1 mm | 6 | |
| Dec. 2 | Sunny | 23° /8° | 0 mm | 6 | |
| Dec. 3 | Sunny | 22° /9° | 4.7 mm | 6 | |
| Dec. 4 | Sunny | 22° /10° | 1.2 mm | 6 | |
| Dec. 5 | Sunny | 23° /10° | 0 mm | 6 | |
| Dec. 6 | Sunny | 23° /10° | 0.1 mm | 6 | |
| Dec. 7 | Sunny | 22° /9° | 0 mm | 5 | |
| Dec. 8 | Sunny | 21° /7° | 0 mm | 5 | |
| Dec. 9 | Sunny | 21° /7° | 0.8 mm | 5 | |
| Dec. 10 | Sunny | 20° /6° | 0.8 mm | 5 | |
| Dec. 11 |  Overcast | 20° /7° | 0 mm | 5 | |
| Dec. 12 | Sunny | 20° /9° | 1.3 mm | 5 | |
| Dec. 13 | Overcast | 19° /8° | 0.1 mm | 5 | |
| Dec. 14 | Sunny | 27° /9° | 0 mm | 0.6 | |
| Dec. 15 | Sunny | 25° /10° | 0 mm | 0.6 | |
| Dec. 16 | Sunny | 25° /8° | 0 mm | 0.6 | |
| Dec. 17 | Sunny | 23° /16° | 0 mm | 0.6 | |
| Dec. 18 | Sunny | 23° /16° | 0 mm | 0 | |
| Dec. 19 | Sunny | 24° /16° | 0 mm | 5 | |
| Dec. 20 | Sunny | 22° /16° | 0 mm | 5 | |
| Dec. 21 | Sunny | 22° /16° | 0 mm | 5 | |
| Dec. 22 | Sunny | 22° /16° | 0 mm | 5 | |
| Dec. 23 | Sunny | 23° /17° | 0 mm | 5 | |
| Dec. 24 | Sunny | 22° /17° | 0 mm | 5 | |
| Dec. 25 |  Patchy rain possible | 21° /18° | 0.9 mm | 4 | |
| Dec. 26 |  Partly cloudy | 20° /15° | 0 mm | 5 | |
| Dec. 27 | Overcast | 18° /8° | 0 mm | 4 | |
| Dec. 28 | Partly cloudy | 16° /9° | 3 mm | 4 | |
| Dec. 29 | Overcast | 17° /8° | 0.3 mm | 4 | |
| Dec. 30 | Sunny | 18° /8° | 0.2 mm | 5 | |
| Dec. 31 | Overcast | 16° /8° | 1.8 mm | 4 | |
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Important Notice
Our weather forecast for Arizona in December is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Arizona forecast closer to your planned date for the most up-to-date weather information.
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Arizona in December - FAQ
What are the expected maximum and minimum temperatures in Arizona during December?
Enjoy moderate daytime temperatures of up to 19° and cooler nights around 9°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Arizona during December?
In December, Arizona can expect light to moderate rainfall, totaling 24.7 mm across approximately 10 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in Arizona during December?
The average wind speed in Arizona during December is 10 km/h, suggesting breezy to windy conditions, depending on your activities.
December rainfall patterns in Arizona
Explore the daily rainfall trends and prepare for Arizonas December weather 💧
Typically, Arizona has 10 rainy days in December with a total of 24.7 mm of rainfall.
UV exposure in Arizona during December
Stay informed about UV levels for safe outdoor activities throughout the month of December ☀️
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