September weather in Glen Ullin, ND
The average temperature in Glen Ullin in September is 57.2°F (42.9°F–71.5°F). Average precipitation: 1.89 inches. Average snowfall is 0.2 inches.
September is a fall month in Glen Ullin, and is warmer than the annual average of 41.5°F. Daily temperatures swing about 28.6°F between overnight low and afternoon high. Expect about 7 days with precipitation. Daylight averages about 12h 19m. For travel, September is a comfortable month to visit.
Avg High
71.5°F
Avg Low
42.9°F
Precipitation
1.89 in
Snow
0.2 in
September records in Glen Ullin
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 93.9°F (1973) | 30.9°F (1994) | 0.90 in (2011) |
| September 2 | 99.0°F (2001) | 28.9°F (1974) | 0.24 in (1977) |
| September 3 | 102.0°F (1971) | 33.1°F (1974) | 0.82 in (1973) |
| September 4 | 102.0°F (1978) | 35.1°F (1974) | 0.35 in (2016) |
| September 5 | 105.1°F (1978) | 24.1°F (1965) | 2.09 in (2023) |
| September 6 | 106.0°F (1978) | 33.1°F (1968) | 1.50 in (2010) |
| September 7 | 104.0°F (1976) | 32.0°F (2004) | 0.59 in (2019) |
| September 8 | 98.1°F (1980) | 28.9°F (2020) | 1.14 in (2019) |
| September 9 | 93.9°F (1994) | 28.9°F (2020) | 2.51 in (2013) |
| September 10 | 98.1°F (1994) | 26.1°F (1965) | 1.82 in (2003) |
| September 11 | 95.0°F (1978) | 19.9°F (1964) | 1.02 in (1979) |
| September 12 | 93.0°F (1976) | 25.0°F (1989) | 1.26 in (1978) |
| September 13 | 97.0°F (2017) | 21.0°F (1970) | 2.05 in (1967) |
| September 14 | 91.9°F (1969) | 19.0°F (1993) | 0.36 in (2004) |
| September 15 | 91.9°F (1968) | 28.9°F (2007) | 1.17 in (1994) |
| September 16 | 91.0°F (2002) | 28.9°F (1965) | 2.65 in (1976) |
| September 17 | 97.0°F (2002) | 24.1°F (1993) | 1.42 in (1968) |
| September 18 | 96.1°F (2000) | 25.0°F (1971) | 2.29 in (1977) |
| September 19 | 91.9°F (2004) | 23.0°F (1991) | 0.82 in (1996) |
| September 20 | 89.1°F (1972) | 21.9°F (1965) | 1.49 in (1996) |
| September 21 | 84.0°F (2005) | 27.0°F (1972) | 0.77 in (2019) |
| September 22 | 84.0°F (2015) | 19.9°F (1995) | 0.86 in (1977) |
| September 23 | 90.0°F (2007) | 24.1°F (1989) | 0.55 in (2006) |
| September 24 | 89.1°F (1992) | 21.0°F (1965) | 1.38 in (1977) |
| September 25 | 89.1°F (1992) | 24.1°F (1965) | 0.57 in (1980) |
| September 26 | 89.1°F (2014) | 15.1°F (1965) | 0.56 in (1972) |
| September 27 | 99.0°F (1990) | 21.9°F (1967) | 0.30 in (2006) |
| September 28 | 89.1°F (1989) | 19.9°F (1992) | 0.42 in (1988) |
| September 29 | 88.0°F (1980) | 24.1°F (1992) | 0.72 in (2019) |
| September 30 | 96.1°F (2024) | 12.0°F (1974) | 0.79 in (2014) |