Phoenix weather by month

Phoenix runs from an average daily high of 66°F in December to 106°F in July, with overnight lows between 45°F (December) and 84°F (July).

August is the wettest month (0.9 inches) and June the driest (0.0 inches); about 7 inches fall in a normal year.

Average highs reach 90°F or more in May-Sep.

By a simple rule (average highs of 65-88°F, lows of 40°F or more and rain at or under the yearly average), the comfortable months for Phoenix day trips are Apr and Nov.

Month by month in Phoenix

Month	Average high	Average low	Rain (in)	Day trips open
January	68°F	46°F	0.9	98 of 98
February	71°F	49°F	0.9	98 of 98
March	78°F	54°F	0.8	98 of 98
April best	86°F	61°F	0.2	98 of 98
May	94°F	70°F	0.1	98 of 98
June	104°F	79°F	0.0	98 of 98
July	106°F	84°F	0.9	98 of 98
August	105°F	84°F	0.9	98 of 98
September	100°F	78°F	0.6	98 of 98
October	89°F	66°F	0.6	98 of 98
November best	76°F	54°F	0.6	98 of 98
December	66°F	45°F	0.7	98 of 98

The numbers are from NOAA's station at Phoenix Sky Harbor Intl Airport, Az (USW00023183). Climate normals 1991-2020: long-run averages, not a forecast. "Day trips open" counts the places within 3 hours that are open or in season on the 15th, from our own place data.

Questions about Phoenix weather

What is the best time to visit Phoenix?

By a simple rule (average highs of 65-88°F, lows of 40°F or more and rain at or under the yearly average), the comfortable months for Phoenix day trips are Apr and Nov.

What is the hottest and coldest month in Phoenix?

July is the hottest (average high 106°F) and December the coolest (average low 45°F).

When does it rain the most in Phoenix?

August is the wettest month (0.9 inches) and June the driest (0.0 inches).

Does it snow in Phoenix?

The station does not record snowfall as a normal; check the forecast for mountain areas.

Where do these weather numbers come from?

The numbers are from NOAA's station at Phoenix Sky Harbor Intl Airport, Az (USW00023183). They are 1991-2020 climate normals (long-run averages), not a forecast. For today's weather use the National Weather Service forecast.