September weather in Hysham, MT
The average temperature in Hysham in September is 60.4°F (45.5°F–75.3°F). Average precipitation: 1.40 inches.
September is a fall month in Hysham, and is warmer than the annual average of 47.2°F. Daily temperatures swing about 29.8°F between overnight low and afternoon high. Expect about 5 days with precipitation. Daylight averages about 12h 19m. For travel, September is a comfortable month to visit.
Avg High
75.3°F
Avg Low
45.5°F
Precipitation
1.40 in
Snow
0.1 in
September records in Hysham
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 105.1°F (1983) | 36.0°F (1965) | 1.00 in (1973) |
| September 2 | 100.0°F (1948) | 30.9°F (1961) | 0.46 in (1999) |
| September 3 | 99.0°F (1950) | 30.0°F (1985) | 0.40 in (1971) |
| September 4 | 102.0°F (1950) | 27.0°F (1962) | 0.30 in (1997) |
| September 5 | 100.0°F (2022) | 30.9°F (1956) | 0.30 in (1987) |
| September 6 | 102.0°F (1980) | 30.0°F (1956) | 0.99 in (2001) |
| September 7 | 98.1°F (1966) | 34.0°F (1956) | 1.33 in (1946) |
| September 8 | 98.1°F (1979) | 30.0°F (1962) | 1.27 in (1962) |
| September 9 | 100.0°F (1981) | 28.9°F (1962) | 0.63 in (1946) |
| September 10 | 93.9°F (1963) | 28.9°F (1955) | 3.05 in (1961) |
| September 11 | 99.0°F (1959) | 24.1°F (1989) | 0.98 in (1991) |
| September 12 | 97.0°F (1981) | 26.1°F (2014) | 2.02 in (2019) |
| September 13 | 93.9°F (1948) | 21.9°F (1949) | 0.85 in (1978) |
| September 14 | 96.1°F (1948) | 27.0°F (1947) | 1.15 in (1982) |
| September 15 | 100.0°F (1948) | 27.0°F (1970) | 1.60 in (2017) |
| September 16 | 96.1°F (1979) | 30.0°F (1970) | 0.72 in (1959) |
| September 17 | 93.9°F (1984) | 21.9°F (1965) | 0.49 in (1946) |
| September 18 | 95.0°F (1984) | 24.1°F (1971) | 1.75 in (1978) |
| September 19 | 98.1°F (1981) | 25.0°F (1965) | 1.00 in (1983) |
| September 20 | 91.0°F (1966) | 28.0°F (1983) | 0.60 in (1970) |
| September 21 | 89.1°F (1979) | 23.0°F (1995) | 0.60 in (1968) |
| September 22 | 90.0°F (1948) | 19.9°F (2000) | 0.57 in (2023) |
| September 23 | 93.0°F (1966) | 21.0°F (1955) | 0.83 in (2023) |
| September 24 | 91.0°F (1949) | 24.1°F (1961) | 1.33 in (2016) |
| September 25 | 93.9°F (2015) | 21.9°F (1984) | 2.25 in (1986) |
| September 26 | 93.0°F (2015) | 26.1°F (1955) | 0.20 in (2013) |
| September 27 | 93.0°F (1963) | 21.9°F (1976) | 0.55 in (1982) |
| September 28 | 93.0°F (1967) | 21.9°F (1984) | 0.32 in (1988) |
| September 29 | 93.0°F (1963) | 19.9°F (1985) | 0.64 in (2019) |
| September 30 | 98.1°F (2024) | 19.0°F (1985) | 1.08 in (1950) |