September weather in Milton, IL
The average temperature in Milton in September is 67.4°F (54.8°F–80.1°F). Average precipitation: 3.61 inches.
September is a fall month in Milton, and is warmer than the annual average of 53.8°F. Daily temperatures swing about 25.3°F between overnight low and afternoon high. Expect about 8 days with precipitation. Daylight averages about 12h 15m. For travel, September is a comfortable month to visit.
Avg High
80.1°F
Avg Low
54.8°F
Precipitation
3.61 in
Daylight
12h 15m
September records in Milton
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 97.0°F (2013) | 48.9°F (2023) | 3.28 in (2012) |
| September 2 | 93.9°F (1999) | 46.9°F (2017) | 0.56 in (2020) |
| September 3 | 95.0°F (2000) | 46.0°F (2017) | 3.10 in (1993) |
| September 4 | 93.9°F (2007) | 45.0°F (1997) | 2.24 in (2008) |
| September 5 | 95.0°F (1999) | 45.0°F (1997) | 2.18 in (2008) |
| September 6 | 96.1°F (1998) | 45.0°F (2025) | 1.61 in (1992) |
| September 7 | 95.0°F (1998) | 41.0°F (2025) | 1.01 in (2007) |
| September 8 | 93.9°F (2016) | 39.9°F (2024) | 2.35 in (2013) |
| September 9 | 93.9°F (2002) | 39.9°F (2024) | 0.61 in (2016) |
| September 10 | 97.0°F (2013) | 43.0°F (2024) | 2.70 in (2014) |
| September 11 | 95.0°F (2013) | 45.0°F (1999) | 1.95 in (2010) |
| September 12 | 93.9°F (2000) | 44.1°F (2007) | 2.36 in (2006) |
| September 13 | 93.9°F (2000) | 39.9°F (2014) | 0.26 in (2008) |
| September 14 | 93.9°F (2005) | 39.0°F (2014) | 4.74 in (1993) |
| September 15 | 89.1°F (2024) | 37.0°F (2007) | 0.63 in (2002) |
| September 16 | 93.0°F (2018) | 39.9°F (2000) | 1.41 in (1991) |
| September 17 | 95.0°F (2018) | 39.0°F (1999) | 0.62 in (1997) |
| September 18 | 95.0°F (2018) | 39.0°F (2000) | 0.78 in (2022) |
| September 19 | 97.0°F (2018) | 41.0°F (2012) | 1.78 in (2010) |
| September 20 | 97.0°F (2018) | 36.0°F (2006) | 1.16 in (2002) |
| September 21 | 95.0°F (2017) | 42.1°F (2000) | 1.16 in (2021) |
| September 22 | 91.9°F (2016) | 37.0°F (1999) | 0.52 in (2024) |
| September 23 | 95.0°F (2017) | 35.1°F (2012) | 1.64 in (1993) |
| September 24 | 93.9°F (2017) | 33.1°F (2012) | 1.10 in (2024) |
| September 25 | 93.0°F (2017) | 35.1°F (2012) | 0.61 in (1998) |
| September 26 | 93.0°F (2017) | 36.0°F (2000) | 1.42 in (1994) |
| September 27 | 91.9°F (2017) | 37.9°F (2000) | 0.42 in (1996) |
| September 28 | 90.0°F (2019) | 36.0°F (2022) | 0.64 in (2020) |
| September 29 | 89.1°F (2021) | 36.0°F (2022) | 0.91 in (1999) |
| September 30 | 88.0°F (2023) | 36.0°F (2022) | 0.06 in (2015) |