September weather in Pearl City, IL
The average temperature in Pearl City in September is 62.6°F (51.0°F–74.3°F). Average precipitation: 4.11 inches.
September is a fall month in Pearl City, and is warmer than the annual average of 47.7°F. Daily temperatures swing about 23.3°F between overnight low and afternoon high. Expect about 9 days with precipitation. Daylight averages about 12h 16m. For travel, September is a comfortable month to visit.
Avg High
74.3°F
Avg Low
51.0°F
Precipitation
4.11 in
Daylight
12h 16m
September records in Pearl City
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 93.9°F (2000) | 44.1°F (2009) | 2.62 in (1989) |
| September 2 | 95.0°F (1984) | 45.0°F (1976) | 2.05 in (2018) |
| September 3 | 89.1°F (1983) | 43.0°F (1974) | 2.93 in (2019) |
| September 4 | 93.0°F (2012) | 37.9°F (1974) | 1.68 in (2006) |
| September 5 | 93.0°F (2012) | 41.0°F (1974) | 0.87 in (1971) |
| September 6 | 91.0°F (1998) | 37.9°F (1988) | 1.62 in (2020) |
| September 7 | 93.9°F (1990) | 39.0°F (1986) | 0.70 in (1980) |
| September 8 | 96.1°F (1985) | 36.0°F (1986) | 1.60 in (2020) |
| September 9 | 96.1°F (1978) | 37.9°F (1986) | 1.74 in (2020) |
| September 10 | 95.0°F (2013) | 42.1°F (1975) | 2.17 in (1965) |
| September 11 | 95.0°F (2013) | 39.9°F (1993) | 3.11 in (2000) |
| September 12 | 90.0°F (1978) | 39.9°F (1975) | 2.35 in (2019) |
| September 13 | 90.0°F (1984) | 34.0°F (1975) | 4.27 in (1972) |
| September 14 | 87.1°F (1994) | 35.1°F (2007) | 5.25 in (1961) |
| September 15 | 88.0°F (1994) | 35.1°F (2007) | 1.94 in (1970) |
| September 16 | 89.1°F (1994) | 33.1°F (1984) | 0.92 in (1983) |
| September 17 | 88.0°F (2018) | 34.0°F (1984) | 3.00 in (1970) |
| September 18 | 90.0°F (1988) | 37.9°F (1973) | 1.91 in (1977) |
| September 19 | 88.0°F (2025) | 37.0°F (2012) | 1.38 in (1968) |
| September 20 | 91.0°F (2013) | 32.0°F (1991) | 3.10 in (2001) |
| September 21 | 91.9°F (2022) | 33.1°F (1991) | 3.00 in (1950) |
| September 22 | 89.1°F (2024) | 30.0°F (1974) | 3.26 in (2000) |
| September 23 | 91.9°F (2017) | 28.0°F (1974) | 1.41 in (2009) |
| September 24 | 93.0°F (2017) | 28.9°F (1976) | 0.92 in (1968) |
| September 25 | 89.1°F (1984) | 30.0°F (1976) | 4.10 in (1986) |
| September 26 | 91.0°F (2017) | 32.0°F (1984) | 1.97 in (1993) |
| September 27 | 88.0°F (2025) | 30.0°F (1991) | 2.24 in (1959) |
| September 28 | 88.0°F (2021) | 30.0°F (1991) | 1.03 in (1959) |
| September 29 | 87.1°F (2002) | 28.0°F (1984) | 2.12 in (1954) |
| September 30 | 90.0°F (2025) | 28.0°F (1984) | 0.59 in (1986) |