Tucson, AZ Climate

Summary Graph

The summary climate graph for Tucson, AZ shows a selection of temperature, rainfall and snow minimum, mean and maximum measures over the course of a year. Click on each of the measures in the key to toggle them on and off.

Graph of average and extreme temperature ranges by day for Tucson, AZ.


The warmest month in Tucson International, Tucson, Arizona is June with an average high temperature of 101.5°F. The hottest day on record was June 27 1990 when the temperature hit 117.0°F. During December the overnight temperature drops to an average of 38.3°F with the lowest temperature of 16.0°F being recorded on December 24 1974.

Warmest Days

Warmest Months

Coldest Days

Coldest Months

The warmest days on record are:

27 Jun 1990117°F
30 Jun 1994116.1°F
23 Jun 1988114.1°F
5 Jul 1989114.1°F
19 Jun 1989113°F

The warmest months on average were:

June 1990106.9°F
June 1994106.5°F
July 1994106.1°F
July 1989105.5°F
June 1988104.9°F

The coldest days on record are:

24 Dec 197416°F
4 Feb 201118°F
18 Jan 198719°F
29 Dec 200319°F
9 Dec 197819.9°F

The coldest months on average were:

December 197432.5°F
January 198933.5°F
December 200134.1°F
January 198734.2°F
January 197534.5°F


The wettest month by average rainfall in Tucson, AZ is July with an average of 2.6 inches of rain falling on 11 to 12 days.Although in August it typically rains on more days with 2.5 inches falling in 12 to 13 days. The driest month in Tucson, AZ is May with an average of 0.4 inches of rain falling on 2 to 3 days.

Wettest Days

The wettest days on record are:

16 September 20112.8 inches
4 September 19961.9 inches
28 September 19951.7 inches
30 September 19831.4 inches
18 September 19911.3 inches

Wettest Months

The wettest months on record are:

January 197328.4 inches
February 197313 inches
April 197312.6 inches
July 198411.9 inches
August 198011 inches

Driest Months

The driest months on record are:

December 19730 inches
February 19740 inches
June 19750 inches
April 19740 inches
May 19740 inches