September weather in Morrison, IL
The average temperature in Morrison in September is 63.1°F (51.2°F–75.0°F). Average precipitation: 3.35 inches.
September is a fall month in Morrison, and is warmer than the annual average of 48.3°F. Daily temperatures swing about 23.8°F between overnight low and afternoon high. Expect about 7 days with precipitation. Daylight averages about 12h 16m. For travel, September is one of the best months of the year to visit.
Avg High
75.0°F
Avg Low
51.2°F
Precipitation
3.35 in
Daylight
12h 16m
September records in Morrison
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 102.0°F (1913) | 32.0°F (1895) | 3.60 in (1914) |
| September 2 | 102.0°F (1913) | 39.0°F (1946) | 2.05 in (1905) |
| September 3 | 100.0°F (1913) | 39.9°F (1908) | 2.63 in (1895) |
| September 4 | 102.0°F (1925) | 37.0°F (1974) | 1.45 in (1931) |
| September 5 | 102.9°F (1899) | 39.9°F (2003) | 1.33 in (1910) |
| September 6 | 100.9°F (1922) | 36.0°F (1988) | 2.50 in (2020) |
| September 7 | 100.0°F (1939) | 37.9°F (1988) | 3.42 in (1938) |
| September 8 | 100.0°F (1922) | 37.0°F (1986) | 3.95 in (1941) |
| September 9 | 99.0°F (1897) | 37.9°F (1986) | 2.60 in (1965) |
| September 10 | 97.0°F (1897) | 37.0°F (1943) | 2.13 in (2014) |
| September 11 | 96.1°F (2013) | 32.0°F (1917) | 2.04 in (1925) |
| September 12 | 96.1°F (1897) | 33.1°F (1955) | 3.28 in (2008) |
| September 13 | 99.0°F (1939) | 33.1°F (1964) | 2.53 in (1961) |
| September 14 | 102.0°F (1939) | 32.0°F (1923) | 2.42 in (1961) |
| September 15 | 102.0°F (1939) | 35.1°F (1904) | 1.95 in (2019) |
| September 16 | 93.0°F (1927) | 32.0°F (1916) | 2.44 in (1936) |
| September 17 | 97.0°F (1927) | 34.0°F (1943) | 1.86 in (1970) |
| September 18 | 93.9°F (1988) | 30.0°F (1916) | 2.20 in (2015) |
| September 19 | 93.9°F (1947) | 32.0°F (1901) | 1.89 in (1900) |
| September 20 | 93.9°F (1920) | 28.9°F (1956) | 3.00 in (1965) |
| September 21 | 93.9°F (1920) | 30.0°F (1991) | 3.71 in (1947) |
| September 22 | 91.0°F (1920) | 30.9°F (1913) | 2.80 in (1970) |
| September 23 | 91.9°F (2017) | 27.0°F (1974) | 1.22 in (1902) |
| September 24 | 93.0°F (1920) | 28.0°F (2012) | 1.10 in (2005) |
| September 25 | 95.0°F (1920) | 28.0°F (1942) | 1.65 in (1973) |
| September 26 | 91.0°F (2017) | 26.1°F (1928) | 2.29 in (1959) |
| September 27 | 91.0°F (1998) | 30.0°F (1918) | 1.59 in (1907) |
| September 28 | 93.0°F (1952) | 24.1°F (1942) | 3.10 in (1999) |
| September 29 | 97.0°F (1953) | 27.0°F (1949) | 1.91 in (1954) |
| September 30 | 91.9°F (1952) | 19.0°F (1899) | 1.20 in (1919) |