September weather in Pleasant Prairie, WI
The average temperature in Pleasant Prairie in September is 64.0°F (56.1°F–71.9°F). Average precipitation: 3.53 inches.
September is a fall month in Pleasant Prairie, and is warmer than the annual average of 48.4°F. Daily temperatures swing about 15.8°F between overnight low and afternoon high. Expect about 9 days with precipitation. Daylight averages about 12h 16m. For travel, September is one of the best months of the year to visit.
Avg High
71.9°F
Avg Low
56.1°F
Precipitation
3.53 in
Daylight
12h 16m
September records in Pleasant Prairie
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 100.0°F (1953) | 46.9°F (1967) | 0.78 in (1989) |
| September 2 | 99.0°F (1953) | 45.0°F (1946) | 2.41 in (2002) |
| September 3 | 95.0°F (1944) | 45.0°F (1974) | 0.91 in (2018) |
| September 4 | 91.0°F (1990) | 44.1°F (1974) | 2.91 in (2008) |
| September 5 | 91.9°F (1954) | 44.1°F (1984) | 0.72 in (1947) |
| September 6 | 95.0°F (1990) | 39.9°F (1984) | 1.17 in (1970) |
| September 7 | 96.1°F (1960) | 41.0°F (1956) | 1.37 in (1965) |
| September 8 | 93.0°F (1960) | 43.0°F (1956) | 1.74 in (2020) |
| September 9 | 96.1°F (1983) | 44.1°F (1969) | 0.98 in (2001) |
| September 10 | 96.1°F (2013) | 45.0°F (1969) | 2.22 in (1986) |
| September 11 | 89.1°F (1951) | 39.9°F (1955) | 4.18 in (2022) |
| September 12 | 89.1°F (1951) | 42.1°F (1953) | 3.06 in (2006) |
| September 13 | 93.0°F (2005) | 36.0°F (1953) | 2.84 in (2019) |
| September 14 | 86.0°F (1947) | 41.0°F (1949) | 1.37 in (1945) |
| September 15 | 89.1°F (1994) | 39.0°F (1984) | 1.44 in (1970) |
| September 16 | 91.0°F (1955) | 34.0°F (1984) | 1.73 in (1997) |
| September 17 | 91.9°F (2021) | 35.1°F (1984) | 2.76 in (1978) |
| September 18 | 91.9°F (1955) | 37.0°F (1956) | 1.06 in (1972) |
| September 19 | 91.9°F (1947) | 36.0°F (1956) | 2.58 in (2001) |
| September 20 | 88.0°F (2024) | 30.9°F (1956) | 1.11 in (1963) |
| September 21 | 93.0°F (1946) | 34.0°F (1983) | 1.40 in (1950) |
| September 22 | 86.0°F (1959) | 32.0°F (1983) | 3.48 in (1947) |
| September 23 | 88.0°F (2010) | 32.0°F (1974) | 0.93 in (1964) |
| September 24 | 86.0°F (1958) | 36.0°F (1983) | 1.98 in (1986) |
| September 25 | 84.9°F (1986) | 36.0°F (1978) | 2.77 in (1993) |
| September 26 | 91.0°F (2017) | 32.0°F (1984) | 1.62 in (1996) |
| September 27 | 88.0°F (1944) | 35.1°F (1984) | 1.68 in (1999) |
| September 28 | 89.1°F (1952) | 35.1°F (1961) | 2.03 in (1999) |
| September 29 | 97.0°F (1953) | 30.0°F (1984) | 0.85 in (1973) |
| September 30 | 91.0°F (1953) | 30.0°F (1974) | 0.81 in (1977) |