September weather in Summerfield, IL
The average temperature in Summerfield in September is 70.1°F (56.9°F–83.3°F). Average precipitation: 3.35 inches.
September is a fall month in Summerfield, and is warmer than the annual average of 57.7°F. Daily temperatures swing about 26.4°F between overnight low and afternoon high. Expect about 7 days with precipitation. Daylight averages about 12h 14m. For travel, September is a comfortable month to visit.
Avg High
83.3°F
Avg Low
56.9°F
Precipitation
3.35 in
Daylight
12h 14m
September records in Summerfield
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 100.0°F (1953) | 44.1°F (1987) | 2.00 in (1959) |
| September 2 | 100.0°F (1954) | 42.1°F (1967) | 2.32 in (2014) |
| September 3 | 98.1°F (2011) | 44.1°F (1967) | 1.94 in (1993) |
| September 4 | 102.0°F (1954) | 42.1°F (1974) | 2.19 in (2008) |
| September 5 | 102.9°F (1954) | 42.1°F (1974) | 3.23 in (1965) |
| September 6 | 102.0°F (1954) | 45.0°F (1976) | 0.34 in (1966) |
| September 7 | 99.0°F (1990) | 35.1°F (1988) | 0.39 in (1983) |
| September 8 | 98.1°F (1971) | 39.9°F (1988) | 4.17 in (2018) |
| September 9 | 98.1°F (1955) | 39.9°F (2024) | 1.92 in (2016) |
| September 10 | 99.0°F (2013) | 41.0°F (1969) | 2.91 in (2016) |
| September 11 | 99.0°F (2013) | 41.0°F (1970) | 2.76 in (1949) |
| September 12 | 98.1°F (2013) | 39.0°F (1968) | 1.14 in (1951) |
| September 13 | 97.0°F (1956) | 42.1°F (1975) | 0.65 in (1961) |
| September 14 | 100.9°F (1971) | 39.9°F (2014) | 3.75 in (1989) |
| September 15 | 100.0°F (1971) | 37.9°F (1979) | 2.10 in (1956) |
| September 16 | 97.0°F (1954) | 37.0°F (1966) | 3.07 in (1978) |
| September 17 | 95.0°F (2019) | 39.9°F (1999) | 2.08 in (1964) |
| September 18 | 97.0°F (1953) | 41.0°F (1981) | 1.62 in (1968) |
| September 19 | 97.0°F (1972) | 36.0°F (1991) | 2.19 in (2018) |
| September 20 | 96.1°F (2017) | 32.0°F (1991) | 3.62 in (1954) |
| September 21 | 97.0°F (2022) | 30.9°F (1991) | 1.38 in (1972) |
| September 22 | 97.0°F (2005) | 35.1°F (1983) | 1.93 in (1965) |
| September 23 | 93.9°F (2007) | 26.1°F (1995) | 2.85 in (1993) |
| September 24 | 93.9°F (2017) | 28.0°F (1989) | 1.07 in (1961) |
| September 25 | 93.9°F (2017) | 32.0°F (1989) | 1.94 in (2005) |
| September 26 | 95.0°F (2017) | 36.0°F (1989) | 2.10 in (2012) |
| September 27 | 93.0°F (1998) | 34.0°F (1991) | 1.20 in (2003) |
| September 28 | 98.1°F (1953) | 30.0°F (1989) | 1.13 in (1959) |
| September 29 | 100.9°F (1953) | 35.1°F (1992) | 1.87 in (2005) |
| September 30 | 93.9°F (1952) | 28.0°F (1993) | 0.41 in (1986) |