Phoenix AZ 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. 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
87.9	2010s	31.0
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
64.6	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	311	175
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

Phoenix - Temperature Averages by Decade

High Temperature for Each Decade

Low Temperature for Each Decade

Hot Days per Decade

Cold Days per Decade

Reference

More on Temperatures in Phoenix