September weather in Marion, WI
The average temperature in Marion in September is 60.0°F (48.0°F–71.9°F). Average precipitation: 3.61 inches.
September is a fall month in Marion, and is warmer than the annual average of 44.5°F. Daily temperatures swing about 23.9°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 12h 18m. For travel, September is a comfortable month to visit.
Avg High
71.9°F
Avg Low
48.0°F
Precipitation
3.61 in
Daylight
12h 18m
September records in Marion
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 96.1°F (1953) | 37.9°F (1974) | 0.88 in (1948) |
| September 2 | 97.0°F (1953) | 34.0°F (1976) | 1.89 in (2002) |
| September 3 | 91.9°F (1960) | 37.0°F (1974) | 1.95 in (2015) |
| September 4 | 100.9°F (2023) | 36.0°F (1974) | 1.46 in (1968) |
| September 5 | 95.0°F (2023) | 36.0°F (1957) | 1.38 in (2014) |
| September 6 | 91.0°F (1960) | 36.0°F (1962) | 2.70 in (1958) |
| September 7 | 93.0°F (1960) | 34.0°F (1955) | 1.35 in (1964) |
| September 8 | 95.0°F (1976) | 35.1°F (1957) | 2.57 in (2001) |
| September 9 | 96.1°F (1955) | 34.0°F (1956) | 1.64 in (1958) |
| September 10 | 90.0°F (1983) | 30.0°F (1995) | 2.38 in (1986) |
| September 11 | 91.0°F (2013) | 32.0°F (1955) | 1.08 in (2000) |
| September 12 | 91.0°F (1952) | 28.0°F (1955) | 1.90 in (2006) |
| September 13 | 90.0°F (1952) | 33.1°F (1953) | 3.35 in (1962) |
| September 14 | 89.1°F (1998) | 33.1°F (1963) | 2.25 in (1990) |
| September 15 | 84.9°F (2009) | 30.0°F (1964) | 1.40 in (1998) |
| September 16 | 91.9°F (1955) | 30.9°F (2007) | 1.19 in (1992) |
| September 17 | 90.0°F (1955) | 32.0°F (1959) | 1.82 in (1987) |
| September 18 | 93.0°F (1955) | 30.0°F (1956) | 1.14 in (1950) |
| September 19 | 90.0°F (1955) | 32.0°F (2012) | 3.45 in (1965) |
| September 20 | 87.1°F (1985) | 25.0°F (1956) | 1.97 in (1983) |
| September 21 | 84.0°F (2024) | 25.0°F (1974) | 1.10 in (2002) |
| September 22 | 86.0°F (2005) | 21.9°F (1974) | 1.91 in (2016) |
| September 23 | 91.0°F (2017) | 26.1°F (1974) | 3.45 in (2010) |
| September 24 | 90.0°F (2017) | 21.0°F (1991) | 1.50 in (1960) |
| September 25 | 89.1°F (2017) | 19.9°F (1995) | 2.00 in (1972) |
| September 26 | 89.1°F (2017) | 26.1°F (1957) | 3.00 in (1998) |
| September 27 | 82.9°F (1979) | 26.1°F (1957) | 1.50 in (1998) |
| September 28 | 87.1°F (1952) | 24.1°F (1957) | 0.57 in (1965) |
| September 29 | 82.0°F (1986) | 26.1°F (1961) | 0.95 in (1972) |
| September 30 | 84.0°F (2025) | 27.0°F (1993) | 1.25 in (1961) |