September weather in Helena, OK
The average temperature in Helena in September is 73.0°F (60.6°F–85.3°F). Average precipitation: 2.56 inches.
September is a fall month in Helena, and is warmer than the annual average of 58.8°F. Daily temperatures swing about 24.7°F between overnight low and afternoon high. Expect about 6 days with precipitation. Daylight averages about 12h 13m. For travel, September is a comfortable month to visit.
Avg High
85.3°F
Avg Low
60.6°F
Precipitation
2.56 in
Daylight
12h 13m
September records in Helena
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 107.1°F (1913) | 53.1°F (1965) | 4.40 in (2016) |
| September 2 | 107.1°F (1913) | 52.0°F (1974) | 2.46 in (2022) |
| September 3 | 106.0°F (2000) | 46.9°F (1974) | 1.05 in (1993) |
| September 4 | 108.0°F (2000) | 46.0°F (1974) | 3.75 in (1967) |
| September 5 | 108.0°F (2000) | 48.0°F (1974) | 1.12 in (1973) |
| September 6 | 104.0°F (1998) | 46.9°F (2011) | 1.29 in (1992) |
| September 7 | 105.1°F (1983) | 48.9°F (2011) | 1.08 in (1983) |
| September 8 | 104.0°F (1998) | 50.0°F (1986) | 2.25 in (2007) |
| September 9 | 102.9°F (1985) | 46.0°F (2020) | 0.90 in (1911) |
| September 10 | 100.9°F (1970) | 39.9°F (1962) | 2.03 in (2020) |
| September 11 | 102.9°F (1984) | 46.0°F (2020) | 1.39 in (1951) |
| September 12 | 106.0°F (2000) | 48.0°F (1913) | 8.74 in (2008) |
| September 13 | 100.0°F (2011) | 45.0°F (2014) | 3.10 in (1989) |
| September 14 | 100.9°F (1962) | 44.1°F (1961) | 1.86 in (1957) |
| September 15 | 102.0°F (1962) | 41.0°F (1993) | 2.42 in (1957) |
| September 16 | 102.0°F (1978) | 39.0°F (1993) | 1.70 in (1969) |
| September 17 | 102.0°F (1978) | 43.0°F (1980) | 0.84 in (1912) |
| September 18 | 99.0°F (1910) | 41.0°F (1980) | 1.72 in (1971) |
| September 19 | 100.0°F (1910) | 37.0°F (1991) | 2.00 in (1988) |
| September 20 | 102.9°F (2024) | 37.9°F (1991) | 1.62 in (1965) |
| September 21 | 102.9°F (2024) | 37.9°F (1983) | 2.26 in (1965) |
| September 22 | 99.0°F (2017) | 37.0°F (1995) | 1.23 in (2024) |
| September 23 | 98.1°F (1911) | 37.0°F (1995) | 4.00 in (1997) |
| September 24 | 98.1°F (1984) | 35.1°F (1989) | 2.94 in (1959) |
| September 25 | 99.0°F (1911) | 36.0°F (1989) | 2.92 in (1959) |
| September 26 | 95.0°F (1907) | 35.1°F (1912) | 2.02 in (1996) |
| September 27 | 99.0°F (1977) | 36.0°F (1975) | 2.05 in (1973) |
| September 28 | 98.1°F (1911) | 37.0°F (1967) | 3.56 in (1945) |
| September 29 | 96.1°F (1998) | 39.0°F (1967) | 1.13 in (1986) |
| September 30 | 99.0°F (1994) | 30.9°F (1984) | 2.78 in (1986) |