September weather in Rexburg, ID
The average temperature in Rexburg in September is 58.3°F (42.6°F–74.0°F). Average precipitation: 1.04 inches.
September is a fall month in Rexburg, and is warmer than the annual average of 44.8°F. Daily temperatures swing about 31.4°F between overnight low and afternoon high. Expect about 6 days with precipitation. Daylight averages about 12h 17m. For travel, September is a comfortable month to visit.
Avg High
74.0°F
Avg Low
42.6°F
Precipitation
1.04 in
Daylight
12h 17m
September records in Rexburg
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 93.0°F (2022) | 33.1°F (1980) | 0.48 in (2000) |
| September 2 | 93.0°F (1983) | 28.9°F (1999) | 0.16 in (2023) |
| September 3 | 95.0°F (2022) | 30.9°F (1999) | 0.20 in (1992) |
| September 4 | 96.1°F (2022) | 28.9°F (2017) | 0.35 in (2023) |
| September 5 | 93.9°F (1998) | 33.1°F (1994) | 0.30 in (1992) |
| September 6 | 95.0°F (2022) | 30.0°F (1996) | 0.80 in (2014) |
| September 7 | 95.0°F (2022) | 28.9°F (2004) | 0.34 in (1978) |
| September 8 | 93.9°F (1979) | 30.9°F (1992) | 0.66 in (2019) |
| September 9 | 91.9°F (1979) | 32.0°F (1999) | 0.30 in (1978) |
| September 10 | 91.0°F (1994) | 32.0°F (1983) | 0.42 in (2010) |
| September 11 | 90.0°F (1994) | 24.1°F (2014) | 0.63 in (1978) |
| September 12 | 91.0°F (1990) | 26.1°F (1988) | 0.30 in (1978) |
| September 13 | 91.0°F (1990) | 24.1°F (2003) | 1.06 in (1985) |
| September 14 | 86.0°F (1981) | 24.1°F (2003) | 0.82 in (2006) |
| September 15 | 93.9°F (1990) | 27.0°F (2003) | 1.00 in (2009) |
| September 16 | 91.9°F (2000) | 32.0°F (1982) | 0.68 in (1996) |
| September 17 | 91.0°F (1995) | 25.0°F (2003) | 0.28 in (2024) |
| September 18 | 90.0°F (1984) | 26.1°F (2003) | 0.50 in (1989) |
| September 19 | 89.1°F (1979) | 24.1°F (1988) | 0.20 in (2020) |
| September 20 | 87.1°F (1994) | 19.9°F (1983) | 0.95 in (2019) |
| September 21 | 84.9°F (1979) | 21.9°F (1983) | 0.83 in (2023) |
| September 22 | 84.9°F (1987) | 21.9°F (1995) | 0.78 in (2022) |
| September 23 | 86.0°F (1979) | 23.0°F (1985) | 0.40 in (2016) |
| September 24 | 87.1°F (1987) | 21.9°F (2000) | 0.25 in (1998) |
| September 25 | 87.1°F (1987) | 19.0°F (2000) | 0.04 in (1981) |
| September 26 | 87.1°F (2015) | 23.0°F (1986) | 1.47 in (2014) |
| September 27 | 84.9°F (1994) | 24.1°F (1999) | 0.45 in (1983) |
| September 28 | 84.0°F (1978) | 19.0°F (1985) | 1.08 in (1983) |
| September 29 | 84.9°F (2024) | 14.0°F (1985) | 0.24 in (2019) |
| September 30 | 86.0°F (1992) | 15.1°F (1985) | 0.44 in (1983) |