Weather in Phoenix in December 2024
- December is usually the wettest month of the year in Phoenix;
Average weather
Average temperature in Phoenix in December
The temperature in December is +72°F on average, with a range between a maximum of +81°F during the day and a minimum of +39°F at night.
The average maximum temperature goes up 13% by the end of the month, compared with the beginning of the month, from +64°F to +70°F.
Is Phoenix warm or cold in December?
Phoenix is typically mild in December.
Maximum temperatures go down compared to the previous month from +77°F to +68°F. The minimum temperature also goes down from +54°F to +45°F.
Pack a light jacket as it will be warm in the day and cool in the evenings.
December is one of the coolest months in Phoenix, here is the comparison with other months:
Climate in Phoenix in December
| November | December | January | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +77°F | +68°F | +68°F | ||||
| Min. temperature | ||||||
| +34°F | +27°F | +28°F | ||||
| Max. temperature | ||||||
| +97°F | +84°F | +86°F | ||||
| Rainfall | ||||||
| 20 mm | 34 mm | 33 mm | ||||
| Wind | ||||||
| 1 m/s | 1 m/s | 1 m/s | ||||
| Humidity | ||||||
| 37% | 48% | 47% | ||||
| Air pressure | ||||||
| 1015 HPa | 1017 HPa | 1017 HPa | ||||
| Sunny days | ||||||
| 15 | 12 | 11 | ||||
| Cloudy days | ||||||
| 11 | 13 | 14 | ||||
| Rainy days | ||||||
| 3 | 5 | 6 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
December weather is still as good as in November. It’s getting colder in December. From +77°F in the day, the average maximum temperature lowers to +68°F. Prepare for more rain. Average rainfall goes from 20 mm to 34 mm. Humidity rises from 37% to 48%. The average wind speed doesn’t change much during December, staying around 1 m/s. The days becoming less sunny, going from 15 sunny days in November to 12 in December.
January brings much the same weather, it remains good.
Wind
The average wind speed is 2 m/s getting up to 4 m/s which is a light breeze; barely moving the tree leaves.
The average wind speed in Phoenix is gradually increasing during December, going from 2 m/s to 2 m/s over the course of the month.
Rain
How was the weather last December in Phoenix?
Climate Change Over the Years
The climate in Phoenix in December has not changed that much over the last 43 years.
The average temperature was the lowest in 1982 (+86°F) and the highest in 1989 (+91°F). The driest year was 2009 with only 125 mm of rainfall, and the wettest year was 1984 with 660 mm.
FAQ
Is December a good time to visit Phoenix?
Can you sunbathe in Phoenix in December?
Is Phoenix rainy in December?
Is it sunny in Phoenix in December?
Other cities in USA
Monthly weather in Phoenix
Source of the data
For this page, we’ve looked at the typical weather in Phoenix, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.