Phoenix - Temperature Averages by Decade





Summarized here are the temperatures extending over seven decades at Phoenix, Arizona. Listed for every decade from the 1950s to the 2010s are averages for maximum and minimum daily temperatures in degrees Fahrenheit and Celsius. That's followed with information on the number of hot and cold days.

Each decade covers a standard 10-year range. For instance the 1990s includes weather measurements from Jan 1, 1990 to Dec 31, 1999. The 2010s data go to the end of 2018. All the temperature data were collected at Sky Harbor International Airport near downtown Phoenix.

High Temperature for Each Decade

Average daily maximum temperature at Phoenix
High °F Decade High °C
88.0 2010s 31.1
87.2 2000s 30.7
86.1 1990s 30.1
86.9 1980s 30.5
85.9 1970s 29.9
84.6 1960s 29.2
85.0 1950s 29.5

Low Temperature for Each Decade

Average daily minimum temperature at Phoenix
Low °F Decade Low °C
64.7 2010s 18.1
64.1 2000s 17.8
62.7 1990s 17.1
62.9 1980s 17.2
58.9 1970s 15.0
55.6 1960s 13.1
56.8 1950s 13.8

Hot Days per Decade

Total days per year on average when the temperature in Phoenix reached at least 70 or 90 °F
Decade 70 °F
21 °C
90 °F
32 °C
2010s 314 177
2000s 297 176
1990s 294 169
1980s 301 173
1970s 294 168
1960s 283 162
1950s 294 163

Cold Days per Decade

Total days per year on average when the temperature in Phoenix dropped to 32 °F or lower
Decade 32 °F
0 °C
2010s 1
2000s 1
1990s 1
1980s 1
1970s 7
1960s 16
1950s 11
Reference

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

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