St. Johns August Weather

Averages and records for weather in St. Johns, Arizona in the month of August.
Typical St. Johns August Weather
1991–2020
Average daily high 87.8 °F
Average daily low 58.1 °F
Average monthly precipitation 2.0 inches
Average monthly snow none
Daily chance of precipitation 24.0%
Daily chance of snow 0%
St. Johns August Weather Records
1901–2024
Highest temperature 104 °F August 2, 1902
Lowest temperature 38 °F August 30, 1944
Highest daily low 71 °F August 19, 1998
Lowest daily high 67 °F August 5, 1999
Hottest average high temperature 94.7 °F 2020
Coldest average high temperature 83.3 °F 1906
Most daily precipitation 3.0 inches August 4, 2007
Most monthly precipitation 7.7 inches 1984
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
August 1 89.1 59.6 102 48
August 2 88.9 59.6 104 48
August 3 88.8 59.5 102 42
August 4 88.7 59.4 100 46
August 5 88.6 59.3 99 40
August 6 88.5 59.1 100 46
August 7 88.5 59.0 99 47
August 8 88.4 59.0 99 46
August 9 88.3 58.9 100 46
August 10 88.2 58.7 98 48
August 11 88.0 58.6 98 48
August 12 87.9 58.5 98 47
August 13 87.8 58.4 100 49
August 14 87.8 58.3 99 46
August 15 87.7 58.1 100 45
August 16 87.7 58.0 99 43
August 17 87.6 57.9 99 43
August 18 87.5 57.7 96 42
August 19 87.4 57.6 97 43
August 20 87.4 57.5 97 46
August 21 87.3 57.4 98 45
August 22 87.2 57.2 99 42
August 23 87.1 57.1 98 44
August 24 87.0 56.9 98 41
August 25 86.9 56.8 96 45
August 26 86.7 56.5 96 43
August 27 86.5 56.3 97 41
August 28 86.3 56.1 96 42
August 29 86.1 55.9 96 40
August 30 85.9 55.7 97 38
August 31 85.7 55.4 97 40
Weather Station Details
Years Station Coordinates
1901–2024 St. Johns location