Phoenix Weather in December
December in Phoenix brings pleasant temperatures, with daytime highs of 19°C (66°F) and nights around 6°C (43°F). The perfect weather makes it a solid choice for a visit.
Rainfall in Phoenix in December
Rain is expected on roughly 5 days, totalling around 25 mm (1 in) for the month. The occasional light shower is possible, but rain is rarely an issue this month.
Temperature in Phoenix in December
December is a perfect month in Phoenix, with 19°C (66°F) during the day and 6°C (43°F) at night. December is part of winter. Temperatures can feel cooler in the morning and evening, so layering is often the best approach. At 6°C (43°F) overnight, it gets properly cold after dark. On the bright side, cold nights tend to make for excellent sleeping conditions. This month typically has the coolest temperatures of the year, yet they remain enjoyable and warm.
Sunshine in Phoenix in December
The days are predominantly sunny, with an estimated total of around 244 hours of sunshine. These sun-filled days are perfect for playing sports, visiting parks, or going for a bike ride.So this is a great month to visit if you prefer dry days with pleasant temperatures.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Phoenix's climate page.
Phoenix Temperature in December
Min Temperature
6°C (43°F)
Max Temperature
19°C (66°F)
Chance of Rain
17%
Precipitation
25 mm (1 in)
Rainy days
5 days
Humidity
51%
Sunshine
244 hours
Percentage Sunshine
79%
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Phoenix typically stay consistent throughout December, with daily highs averaging around 19°C (66°F). Nights are cold, with lows typically ranging from 7°C (45°F) to 9°C (48°F).
Average temperatures in December
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in December
Historical weather for Phoenix in December
Browse day-by-day weather records for Phoenix spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Phoenix historical weather extremes in December
Based on weather observations in Phoenix between 1976 and 2025, these are the recorded extremes during December.
- The hottest December day on record in Phoenix reached 29°C (84°F) (December 16, 1980).
- The lowest daytime temperature in December was 6°C (43°F), recorded on December 11, 1985.
- Phoenix registered its coldest December night on December 9, 1978, with temperatures dropping to -3°C (27°F).
Best Places in the United States of America in December
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in December →
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What to Wear in Phoenix in December
For Phoenix in December, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. Some rain is possible, so pack something to handle light showers. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.What To Do in Phoenix in December
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Phoenix's climate page.
Temperature Rainfall Sunshine Humidity
See the full Phoenix climate overview or explore weather in the United States of America.
