September weather in Baraboo, WI
The average temperature in Baraboo in September is 61.7°F (49.7°F–73.7°F). Average precipitation: 3.85 inches.
September is a fall month in Baraboo, and is warmer than the annual average of 46.6°F. Daily temperatures swing about 24°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 12h 17m. For travel, September is a comfortable month to visit.
Avg High
73.7°F
Avg Low
49.7°F
Precipitation
3.85 in
Daylight
12h 17m
September records in Baraboo
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 95.0°F (1953) | 30.9°F (2016) | 2.99 in (2010) |
| September 2 | 96.1°F (1953) | 37.0°F (2016) | 1.40 in (2002) |
| September 3 | 93.0°F (1960) | 37.0°F (1974) | 1.37 in (1970) |
| September 4 | 95.0°F (2023) | 34.0°F (1974) | 1.25 in (1985) |
| September 5 | 96.1°F (1954) | 32.0°F (1988) | 1.29 in (2018) |
| September 6 | 95.0°F (1990) | 32.0°F (1986) | 1.05 in (1970) |
| September 7 | 96.1°F (1985) | 35.1°F (1986) | 3.19 in (2016) |
| September 8 | 95.0°F (1978) | 30.9°F (1995) | 1.55 in (2001) |
| September 9 | 99.0°F (1955) | 30.9°F (1995) | 2.96 in (1965) |
| September 10 | 93.0°F (2013) | 30.0°F (1967) | 3.00 in (1986) |
| September 11 | 95.0°F (2013) | 30.0°F (1955) | 1.42 in (1991) |
| September 12 | 91.9°F (2005) | 28.0°F (1955) | 3.40 in (1961) |
| September 13 | 91.0°F (2005) | 30.0°F (1953) | 1.89 in (1978) |
| September 14 | 90.0°F (1998) | 33.1°F (1996) | 3.02 in (2003) |
| September 15 | 87.1°F (1994) | 28.0°F (2016) | 2.55 in (1998) |
| September 16 | 91.9°F (1955) | 30.0°F (1984) | 1.74 in (1987) |
| September 17 | 91.9°F (1955) | 30.9°F (1999) | 2.98 in (1992) |
| September 18 | 93.0°F (1955) | 28.0°F (1996) | 2.59 in (1960) |
| September 19 | 91.0°F (2003) | 27.0°F (1996) | 2.02 in (1919) |
| September 20 | 87.1°F (2021) | 27.0°F (1962) | 1.81 in (2013) |
| September 21 | 90.0°F (2017) | 27.0°F (1999) | 1.64 in (1950) |
| September 22 | 88.0°F (2005) | 23.0°F (1974) | 2.19 in (2016) |
| September 23 | 91.9°F (2017) | 21.9°F (1995) | 2.00 in (1970) |
| September 24 | 93.0°F (2017) | 24.1°F (1976) | 2.25 in (1960) |
| September 25 | 90.0°F (2017) | 28.0°F (1975) | 1.06 in (1972) |
| September 26 | 90.0°F (2017) | 25.0°F (1975) | 1.44 in (2011) |
| September 27 | 84.9°F (1998) | 24.1°F (1985) | 1.54 in (1916) |
| September 28 | 87.1°F (1952) | 27.0°F (1976) | 1.54 in (1986) |
| September 29 | 90.0°F (1953) | 19.9°F (1949) | 1.76 in (1919) |
| September 30 | 87.1°F (2025) | 24.1°F (1993) | 2.43 in (1961) |