Phoenix September Weather

Averages and records for weather in Phoenix, Arizona in the month of September.
Typical Phoenix September Weather
1991–2020
Average daily high 100.5 °F
Average daily low 77.8 °F
Average monthly precipitation 0.6 inches
Daily chance of precipitation 8.4%
Phoenix September Weather Records
1905–2024
Highest temperature 118 °F September 1, 1950
Lowest temperature 43 °F September 30, 1907
Highest daily low 91 °F September 5, 2011
Lowest daily high 71 °F September 21, 1950
Hottest average high temperature 104.6 °F 2001
Coldest average high temperature 93.6 °F 1919
Most daily precipitation 3.3 inches September 8, 2014
Most monthly precipitation 5.1 inches 2014
Note: Daily averages are a moving average which includes 14 days before and after
Day Average (°F) Record (°F)
High Low High Low
September 1 103.1 81.3 118 57
September 2 102.9 81.1 115 58
September 3 102.8 80.9 115 60
September 4 102.6 80.7 114 57
September 5 102.5 80.5 115 56
September 6 102.3 80.3 113 58
September 7 102.1 80.0 111 58
September 8 102.0 79.8 110 56
September 9 101.8 79.5 114 52
September 10 101.6 79.2 113 52
September 11 101.4 78.9 112 52
September 12 101.2 78.7 110 50
September 13 101.0 78.5 109 54
September 14 100.8 78.2 112 51
September 15 100.6 77.9 110 51
September 16 100.4 77.6 109 54
September 17 100.2 77.3 113 50
September 18 99.9 77.0 109 53
September 19 99.6 76.7 111 51
September 20 99.4 76.3 107 47
September 21 99.0 75.9 107 47
September 22 98.7 75.5 109 50
September 23 98.3 75.0 108 49
September 24 98.1 74.6 111 48
September 25 97.8 74.2 108 47
September 26 97.5 73.8 108 45
September 27 97.1 73.4 107 45
September 28 96.7 73.0 108 45
September 29 96.4 72.6 107 45
September 30 96.1 72.1 107 43
Weather Station Details
Years Station Coordinates
1933–2024 Phoenix Sky Harbor International Airport location
1905–1933 Tempe 3 S location