Tucson Temperatures: Averages by Month





The numbers here tell you how hot and cold the weather usually is in Tucson, Arizona during each month of the year.

The average high and low temperatures are listed below by month and annually for Tucson, in both degrees Fahrenheit and Celsius.

Maximums and minimums are only part of the temperature picture. To fill in the rest, there's information on how many days a month get above or below a given temperature.

To find out how often it rises over 80, 90 or 100 °F each month in Tucson, scroll down farther. There are also monthly and yearly counts of nights with warm temperatures.

The first set of high and low temperatures are averages for 2010 to 2019. Everything else here is based on 1991 to 2020 weather.

10-year temperature averages for Tucson, 2010 to 2019
High °F Low °F   High °C Low °C
68 41 January 20 5
70 43 February 21 6
78 49 March 26 9
85 54 April 29 12
91 61 May 33 16
103 72 June 39 22
100 77 July 38 25
99 76 August 37 24
95 71 September 35 21
88 59 October 31 15
76 48 November 25 9
66 41 December 19 5
85 58 Year 29 14
30-year temperature averages for Tucson, 1991 to 2020
High °F Low °F   High °C Low °C
67 41 January 19 5
69 43 February 21 6
76 48 March 24 9
83 53 April 28 12
92 62 May 33 17
101 71 June 38 22
100 76 July 38 25
99 75 August 37 24
95 70 September 35 21
86 59 October 30 15
75 48 November 24 9
66 41 December 19 5
84 57 Year 29 14

Days of Hot Weather in Tucson

Every day from May to October, Tucson gets to at least 70 degrees. Temperatures of 80 or hotter can be expected any month of the year except December.

One-hundred-degree weather normally occurs from May to September in Tucson, with about half the days in June and July getting that hot.

Days per month in Tucson of at least 80, 90 or 100 °F
  80 °F
27 °C
90 °F
32 °C
100 °F
38 °C
January 1 0 0
February 4 0 0
March 13 1 0
April 21 8 0
May 29 22 4
June 30 29 21
July 31 30 19
August 31 29 15
September 30 26 8
October 25 13 1
November 11 1 0
December 1 0 0
Year 227 158 68

Number of Warm Nights a Month

Most nights in Tucson, the temperature stays above 50 °F. The thermometer rarely drops below 70 throughout summer.

Still, Tucson does get frost. Twelve nights each winter, on average, have freezing temperatures.

Average number of nights for each month in Tucson that stay above 50, 60 or 70 °F
  50 °F
10 °C
60 °F
16 °C
70 °F
21 °C
January 2 0 0
February 3 0 0
March 10 0 0
April 19 3 0
May 30 17 2
June 30 29 15
July 31 31 27
August 31 31 27
September 30 29 14
October 27 13 1
November 11 1 0
December 2 0 0
Year 224 154 86
References

Jay Lawrimore, Ron Ray, Scott Applequist, Bryant Korzeniewski, Matthew Menne. 2016. Global Summary of the Month and Year, Version 1.0. NOAA National Centers for Environmental Information.

NOAA National Centers for Environmental Information (NCEI). Climate Normals.

Arizona Temperatures
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