Rexburg September Weather

Averages and records for weather in Rexburg, Idaho in the month of September.
Typical Rexburg September Weather
1991–2020
Average daily high 73.9 °F
Average daily low 41.3 °F
Average monthly precipitation 1.0 inches
Rexburg September Weather Records
1950–2022
Highest temperature 96 °F September 4, 2022
Lowest temperature 14 °F September 29, 1985
Highest daily low 64 °F September 10, 2017
Lowest daily high 38 °F September 19, 1978
Hottest average temperature 6.7 °F
above average
2022
Coldest average temperature -5.4 °F
below average
1986
Most daily precipitation 1.5 inches September 26, 2014
Most monthly precipitation 3.5 inches 2019
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 79.5 45.2 93 33
September 2 79.2 45.0 93 29
September 3 78.8 44.8 95 31
September 4 78.4 44.5 96 29
September 5 78.0 44.1 94 33
September 6 77.6 43.8 95 30
September 7 77.2 43.5 95 29
September 8 76.8 43.2 94 31
September 9 76.4 42.9 92 32
September 10 75.9 42.6 91 32
September 11 75.4 42.3 90 24
September 12 75.0 42.0 91 26
September 13 74.5 41.7 91 24
September 14 74.2 41.5 86 24
September 15 74.0 41.3 94 27
September 16 73.7 41.1 92 32
September 17 73.3 40.9 91 25
September 18 72.7 40.7 90 26
September 19 72.1 40.4 89 24
September 20 71.5 40.1 87 20
September 21 70.9 39.7 85 22
September 22 70.3 39.3 85 22
September 23 69.8 39.0 86 23
September 24 69.4 38.7 87 22
September 25 69.0 38.4 87 19
September 26 68.5 38.1 87 23
September 27 68.1 37.8 85 25
September 28 67.6 37.4 84 19
September 29 67.1 37.1 83 14
September 30 66.7 36.8 86 15
Weather Station Details
Years Station Coordinates
1977–2022 Rexburg BYU location
1950–1976 Rexburg location