Williston September Weather

Averages and records for weather in Williston, North Dakota in the month of September.
Typical Williston September Weather
1991–2020
Average daily high 75.4 °F
Average daily low 46.4 °F
Average monthly precipitation 1.4 inches
Average monthly snow none
Daily chance of precipitation 22.9%
Daily chance of snow 0%
Williston September Weather Records
1894–2024
Highest temperature 105 °F September 6, 1976
Lowest temperature 13 °F September 29, 1907
Highest daily low 71 °F September 2, 1983
Lowest daily high 31 °F September 24, 1926
Hottest average high temperature 82.9 °F 2009
Coldest average high temperature 57.0 °F 1965
Most daily precipitation 2.2 inches September 7, 2019
Most monthly precipitation 5.9 inches 2019
Most daily snow 4.0 inches September 24, 1984
Most monthly snow 4.0 inches 1984
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 81.8 51.9 100 34
September 2 81.5 51.6 101 31
September 3 81.1 51.3 103 32
September 4 80.7 51.1 102 33
September 5 80.2 50.7 102 28
September 6 79.7 50.3 105 31
September 7 79.1 49.8 101 31
September 8 78.5 49.2 96 26
September 9 78.0 48.8 99 26
September 10 77.6 48.5 99 28
September 11 77.2 48.1 94 25
September 12 76.9 47.8 97 24
September 13 76.5 47.4 95 25
September 14 76.0 46.9 94 25
September 15 75.6 46.5 100 24
September 16 75.2 46.1 97 26
September 17 74.7 45.7 96 18
September 18 74.2 45.4 93 27
September 19 73.6 44.9 94 22
September 20 72.9 44.4 91 30
September 21 72.3 43.9 91 19
September 22 71.8 43.5 93 22
September 23 71.3 43.1 92 26
September 24 70.8 42.7 93 23
September 25 70.3 42.3 98 17
September 26 69.9 41.9 96 20
September 27 69.4 41.5 95 21
September 28 68.9 41.1 92 21
September 29 68.3 40.7 91 13
September 30 67.7 40.3 89 17
Weather Station Details
Years Station Coordinates
1957–2024 Williston Experimental Farm location
1894–1956 Sloulin Field International Airport location