Thermograph

How unusual is the weather? Graded against ~45 years of local climate history.

Weather in Phoenix, Arizona, United States in December

In an average December, Phoenix sees a daily high around 66°F and a low around 42°F, based on 1981–2026 of local climate records.

Average high66°F
Typical high range56°F to 76°F
Average low42°F
Typical low range34°F to 50°F
Average daily precipitation0.00 in

December records

The most extreme December on record for each metric, across 1981–2026. For rainfall, the wettest and driest are by total December accumulation.

High

Highest 85°F 2021-12-01
Lowest 40°F 1987-12-26

Low

Highest 61°F 2017-12-01
Lowest 18°F 1990-12-23

Feels-like

Highest 82°F 2025-12-11
Lowest 2°F 1990-12-23

Humidity

Highest 11.7 g/m³ 2022-12-04
Lowest 1.0 g/m³ 2009-12-04

Wind

Highest 33 mph 2009-12-07
Lowest 5 mph 2022-12-09

Precip

Wettest 4.39 in 1984
Driest 0.00 in 2024

See Phoenix's live weather grade →

Visiting Phoenix in December? See how its comfort stacks up against where you live.

Compare Phoenix with your city →

‹ November · Phoenix climate overview · January ›