Stillwater September Weather

Averages and records for weather in Stillwater, Oklahoma in the month of September.
Typical Stillwater September Weather
1991–2020
Average daily high 85.6 °F
Average daily low 60.6 °F
Average monthly precipitation 3.4 inches
Average monthly snow none
Daily chance of precipitation 22.8%
Daily chance of snow 0%
Stillwater September Weather Records
1893–2024
Highest temperature 111 °F September 4, 2000
Lowest temperature 31 °F September 30, 1984
Highest daily low 82 °F September 8, 1896
Lowest daily high 48 °F September 22, 1995
Hottest average high temperature 97.6 °F 1939
Coldest average high temperature 74.2 °F 1974
Most daily precipitation 6.1 inches September 24, 1959
Most monthly precipitation 14.0 inches 1945
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 90.7 66.0 106 43
September 2 90.4 65.8 110 48
September 3 90.1 65.5 110 47
September 4 89.9 65.3 111 46
September 5 89.6 65.1 108 47
September 6 89.4 64.8 107 44
September 7 89.1 64.4 103 44
September 8 88.7 64.0 107 46
September 9 88.3 63.6 102 46
September 10 87.8 63.3 103 46
September 11 87.4 62.8 103 39
September 12 86.9 62.4 104 44
September 13 86.5 61.9 105 37
September 14 86.1 61.4 105 37
September 15 85.7 60.9 103 39
September 16 85.4 60.4 102 39
September 17 85.2 59.9 102 41
September 18 84.9 59.5 100 41
September 19 84.5 59.2 102 41
September 20 84.1 58.8 102 37
September 21 83.8 58.5 102 36
September 22 83.4 58.0 99 35
September 23 83.0 57.6 98 35
September 24 82.6 57.2 98 33
September 25 82.3 56.8 100 33
September 26 81.9 56.4 97 34
September 27 81.5 56.0 97 32
September 28 81.2 55.6 105 36
September 29 80.9 55.1 99 34
September 30 80.6 54.7 98 31
Weather Station Details
Years Station Coordinates
2009–2024 Stillwater Regional Airport location
1893–2008 Stillwater 2 W location