Phoenix, Arizona, United States climate

Average temperatures, precipitation and all-time records for Phoenix, Arizona, United States, with every day graded against ~46 years of local climate history (1980–2026). Its warmest month is July, averaging a high of 107°F, and its coldest is January, with an average low of 43°F.

Phoenix is the capital and most populous city of the U.S. state of Arizona. With over 1.6 million residents at the 2020 census, Phoenix is the fifth-most populous city in the United States and the most populous state capital. via Wikipedia

Notable weather in Phoenix

In July 2023, Phoenix endured a record 31 straight days at or above 110°F during one of the most extreme urban heat waves ever recorded in the U.S. Read more →

Phoenix average temperatures by month

Typical daily high and low, and average precipitation, for each month in Phoenix, Arizona, United States, based on 1980–2026 records. The wettest month is February (0.10 in on an average day).

Month	Avg high	Avg low	Avg precip
January	67°F	43°F	0.00 in
February	71°F	47°F	0.10 in
March	78°F	51°F	0.00 in
April	87°F	58°F	0.00 in
May	95°F	67°F	0.00 in
June	105°F	76°F	0.00 in
July	107°F	84°F	0.00 in
August	104°F	82°F	0.10 in
September	100°F	75°F	0.00 in
October	89°F	63°F	0.00 in
November	77°F	51°F	0.00 in
December	66°F	43°F	0.00 in

Jan 35°–76°

Feb 40°–81°

Mar 44°–89°

Apr 51°–96°

May 60°–103°

Jun 69°–111°

Jul 78°–112°

Aug 76°–110°

Sep 68°–106°

Oct 55°–98°

Nov 43°–86°

Dec 36°–75°

Each bar spans the 10th-percentile daily low to the 90th-percentile daily high (the range most days fall within), coloured cold → hot on a shared -10°F to 115°F scale, so the whole year's rhythm reads at a glance.

Thinking of visiting Phoenix?

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Record extremes

Hottest day on record: 120°F on 1990-06-27
Coldest day on record: 22°F on 1990-12-25

All Phoenix weather records →

Percentiles compare each day to Phoenix, Arizona, United States's own history, so grades are relative to this location: a “Near Record” day here isn't the same temperature as elsewhere. How the grades work →