September weather in Greenview, IL
The average temperature in Greenview in September is 66.9°F (54.9°F–78.8°F). Average precipitation: 3.12 inches.
September is a fall month in Greenview, and is warmer than the annual average of 52.3°F. Daily temperatures swing about 23.9°F between overnight low and afternoon high. Expect about 7 days with precipitation. Daylight averages about 12h 15m. For travel, September is one of the best months of the year to visit.
Avg High
78.8°F
Avg Low
54.9°F
Precipitation
3.12 in
Daylight
12h 15m
September records in Greenview
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 89.1°F (2015) | 50.0°F (2023) | 3.29 in (2012) |
| September 2 | 91.0°F (2015) | 45.0°F (2017) | 1.04 in (1989) |
| September 3 | 89.1°F (2015) | 46.0°F (2017) | 3.06 in (1993) |
| September 4 | 91.9°F (2015) | 48.0°F (2025) | 0.97 in (1991) |
| September 5 | 93.9°F (2015) | 48.0°F (2025) | 0.16 in (1994) |
| September 6 | 91.9°F (2015) | 46.9°F (2017) | 2.58 in (2009) |
| September 7 | 93.0°F (2015) | 43.0°F (2025) | 0.37 in (1995) |
| September 8 | 91.0°F (2015) | 42.1°F (2024) | 1.90 in (2018) |
| September 9 | 82.9°F (2015) | 42.1°F (2024) | 1.70 in (1989) |
| September 10 | 87.1°F (2019) | 46.9°F (2025) | 2.29 in (2014) |
| September 11 | 88.0°F (2019) | 46.9°F (2017) | 1.11 in (2014) |
| September 12 | 89.1°F (2019) | 48.0°F (2017) | 4.09 in (2008) |
| September 13 | 90.0°F (2019) | 39.0°F (2014) | 0.72 in (1989) |
| September 14 | 97.0°F (2025) | 37.9°F (2014) | 2.56 in (1993) |
| September 15 | 98.1°F (2025) | 39.0°F (2014) | 1.26 in (1993) |
| September 16 | 91.9°F (2025) | 46.0°F (2014) | 0.99 in (2014) |
| September 17 | 91.9°F (2025) | 46.0°F (2014) | 0.44 in (1988) |
| September 18 | 91.0°F (2018) | 46.9°F (2014) | 0.20 in (2022) |
| September 19 | 93.0°F (2025) | 39.9°F (2020) | 1.30 in (2022) |
| September 20 | 91.9°F (2018) | 39.9°F (2020) | 1.41 in (2005) |
| September 21 | 95.0°F (2022) | 42.1°F (2020) | 1.95 in (2009) |
| September 22 | 91.0°F (2017) | 44.1°F (2014) | 1.18 in (2024) |
| September 23 | 95.0°F (2017) | 44.1°F (2014) | 1.08 in (1993) |
| September 24 | 93.9°F (2017) | 44.1°F (2014) | 0.50 in (1996) |
| September 25 | 93.0°F (2017) | 50.0°F (2014) | 0.62 in (1998) |
| September 26 | 91.9°F (2017) | 48.0°F (2022) | 0.68 in (1993) |
| September 27 | 91.9°F (2017) | 42.1°F (2022) | 0.62 in (2003) |
| September 28 | 90.0°F (2019) | 36.0°F (2022) | 1.00 in (2019) |
| September 29 | 91.0°F (2025) | 39.0°F (2022) | 1.42 in (2019) |
| September 30 | 91.0°F (2025) | 41.0°F (2022) | 0.51 in (2008) |