September weather in Ellis Grove, IL
The average temperature in Ellis Grove in September is 69.5°F (57.7°F–81.4°F). Average precipitation: 2.94 inches.
September is a fall month in Ellis Grove, and is warmer than the annual average of 56.4°F. Daily temperatures swing about 23.7°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
81.4°F
Avg Low
57.7°F
Precipitation
2.94 in
Daylight
12h 14m
September records in Ellis Grove
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 100.9°F (2011) | 46.0°F (1986) | 1.03 in (1982) |
| September 2 | 102.0°F (2011) | 50.0°F (2017) | 1.08 in (2012) |
| September 3 | 100.0°F (2011) | 46.9°F (1974) | 1.60 in (1988) |
| September 4 | 100.9°F (1990) | 43.0°F (1974) | 1.25 in (1977) |
| September 5 | 102.0°F (1990) | 44.1°F (1974) | 1.44 in (2008) |
| September 6 | 111.9°F (1990) | 43.0°F (1988) | 3.62 in (2009) |
| September 7 | 111.9°F (1990) | 44.1°F (2017) | 1.90 in (2007) |
| September 8 | 99.0°F (1980) | 41.0°F (1986) | 3.50 in (2018) |
| September 9 | 95.0°F (1980) | 43.0°F (2024) | 1.97 in (1984) |
| September 10 | 105.1°F (1985) | 43.0°F (2024) | 1.71 in (2010) |
| September 11 | 98.1°F (2013) | 45.0°F (1976) | 2.85 in (1984) |
| September 12 | 98.1°F (1996) | 45.0°F (1977) | 0.75 in (1983) |
| September 13 | 99.0°F (1991) | 44.1°F (1975) | 0.68 in (1996) |
| September 14 | 98.1°F (1991) | 41.0°F (2014) | 1.57 in (1989) |
| September 15 | 97.0°F (2025) | 42.1°F (2014) | 1.15 in (2011) |
| September 16 | 95.0°F (1991) | 42.1°F (2007) | 2.80 in (2005) |
| September 17 | 95.0°F (2019) | 42.1°F (1979) | 3.67 in (2016) |
| September 18 | 93.0°F (1978) | 42.1°F (1981) | 2.90 in (1986) |
| September 19 | 93.9°F (2025) | 41.0°F (1991) | 1.80 in (1988) |
| September 20 | 93.9°F (1978) | 41.0°F (1991) | 0.52 in (2002) |
| September 21 | 96.1°F (2018) | 37.9°F (1983) | 1.16 in (2002) |
| September 22 | 95.0°F (2010) | 36.0°F (1983) | 0.85 in (2025) |
| September 23 | 93.9°F (2005) | 33.1°F (1974) | 3.14 in (1984) |
| September 24 | 93.0°F (2016) | 32.0°F (1989) | 0.90 in (2024) |
| September 25 | 96.1°F (1987) | 32.0°F (1989) | 0.37 in (2018) |
| September 26 | 93.0°F (2016) | 35.1°F (1989) | 0.53 in (2005) |
| September 27 | 93.0°F (1986) | 37.0°F (1985) | 1.13 in (1996) |
| September 28 | 93.0°F (1986) | 37.0°F (1984) | 1.90 in (2024) |
| September 29 | 93.0°F (1990) | 37.9°F (1984) | 1.34 in (1974) |
| September 30 | 91.9°F (1998) | 32.0°F (1984) | 0.92 in (2024) |