Tucson weather by month

Tucson runs from an average daily high of 66°F in December to 101°F in June, with overnight lows between 40°F (December) and 76°F (July).

July is the wettest month (2.2 inches) and May the driest (0.2 inches); about 11 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 Tucson day trips are Jan-Apr and Oct-Nov.

Month by month in Tucson

Month	Average high	Average low	Rain (in)	Day trips open
January best	66°F	41°F	0.8	45 of 46
February best	69°F	43°F	0.8	45 of 46
March best	76°F	48°F	0.6	44 of 46
April best	83°F	53°F	0.2	45 of 46
May	92°F	62°F	0.2	45 of 46
June	101°F	71°F	0.2	45 of 46
July	100°F	76°F	2.2	45 of 46
August	99°F	75°F	2.0	45 of 46
September	95°F	70°F	1.3	45 of 46
October best	86°F	59°F	0.7	45 of 46
November best	75°F	48°F	0.6	45 of 46
December	66°F	40°F	1.0	45 of 46

The numbers are from NOAA's station at Tucson Intl Airport, Az (USW00023160). 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 Tucson weather

What is the best time to visit Tucson?

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 Tucson day trips are Jan-Apr and Oct-Nov.

What is the hottest and coldest month in Tucson?

June is the hottest (average high 101°F) and December the coolest (average low 40°F).

When does it rain the most in Tucson?

July is the wettest month (2.2 inches) and May the driest (0.2 inches).

Does it snow in Tucson?

Very little: the station records about 0.1 inches of snow in a normal year.

Where do these weather numbers come from?

The numbers are from NOAA's station at Tucson Intl Airport, Az (USW00023160). They are 1991-2020 climate normals (long-run averages), not a forecast. For today's weather use the National Weather Service forecast.