St. Johns September Weather

Averages and records for weather in St. Johns, Arizona in the month of September.
Typical St. Johns September Weather
1991–2020
Average daily high 82.5 °F
Average daily low 50.5 °F
Average monthly precipitation 1.0 inches
Average monthly snow none
Daily chance of precipitation 11.0%
Daily chance of snow 0%
St. Johns September Weather Records
1901–2024
Highest temperature 99 °F September 3, 1924
Lowest temperature 23 °F September 22, 1912
Highest daily low 70 °F September 7, 1951
Lowest daily high 54 °F September 25, 1913
Hottest average high temperature 88.3 °F 1956
Coldest average high temperature 73.6 °F 1913
Most daily precipitation 2.3 inches September 5, 1913
Most monthly precipitation 5.0 inches 1996
Most daily snow none -
Most monthly snow none -
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 85.4 55.1 97 42
September 2 85.2 54.8 98 40
September 3 85.0 54.5 99 41
September 4 84.8 54.2 96 36
September 5 84.6 53.9 98 41
September 6 84.5 53.6 97 41
September 7 84.3 53.3 95 41
September 8 84.1 53.1 96 37
September 9 83.9 52.7 95 35
September 10 83.7 52.3 96 34
September 11 83.4 52.0 93 33
September 12 83.2 51.7 93 32
September 13 83.0 51.4 92 29
September 14 82.9 51.0 93 30
September 15 82.7 50.7 94 36
September 16 82.5 50.3 93 35
September 17 82.3 50.0 93 34
September 18 82.0 49.7 93 32
September 19 81.8 49.4 93 32
September 20 81.5 49.1 91 30
September 21 81.2 48.7 96 30
September 22 80.9 48.3 94 23
September 23 80.5 47.8 92 28
September 24 80.1 47.4 90 32
September 25 79.9 46.9 90 27
September 26 79.6 46.6 90 28
September 27 79.3 46.2 95 30
September 28 79.0 45.8 92 30
September 29 78.8 45.4 91 28
September 30 78.5 45.0 91 24
Weather Station Details
Years Station Coordinates
1901–2024 St. Johns location