September weather in Glenwood, IA
The average temperature in Glenwood in September is 66.1°F (52.7°F–79.4°F). Average precipitation: 3.32 inches.
September is a fall month in Glenwood, and is warmer than the annual average of 50.9°F. Daily temperatures swing about 26.7°F between overnight low and afternoon high. Expect about 6 days with precipitation. Daylight averages about 12h 15m. For travel, September is one of the best months of the year to visit.
Avg High
79.4°F
Avg Low
52.7°F
Precipitation
3.32 in
Daylight
12h 15m
September records in Glenwood
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 100.0°F (1922) | 37.9°F (1949) | 1.81 in (1931) |
| September 2 | 98.1°F (1897) | 43.0°F (1893) | 6.00 in (1997) |
| September 3 | 104.0°F (1939) | 34.0°F (1974) | 3.18 in (1926) |
| September 4 | 102.0°F (1895) | 39.0°F (1974) | 4.64 in (1946) |
| September 5 | 100.0°F (1893) | 41.0°F (1918) | 2.06 in (1956) |
| September 6 | 105.1°F (1939) | 39.9°F (1988) | 1.32 in (1958) |
| September 7 | 107.1°F (1939) | 39.0°F (1956) | 3.76 in (1965) |
| September 8 | 102.0°F (1893) | 37.9°F (1986) | 2.28 in (1926) |
| September 9 | 102.0°F (1955) | 39.9°F (1976) | 3.86 in (1989) |
| September 10 | 100.0°F (1895) | 35.1°F (1976) | 2.72 in (1921) |
| September 11 | 100.0°F (1895) | 36.0°F (1940) | 1.56 in (1972) |
| September 12 | 98.1°F (1893) | 36.0°F (1940) | 2.37 in (1961) |
| September 13 | 100.0°F (1931) | 35.1°F (1949) | 2.40 in (1933) |
| September 14 | 100.0°F (1939) | 36.0°F (1923) | 1.86 in (1970) |
| September 15 | 100.0°F (1939) | 34.0°F (1993) | 2.42 in (1941) |
| September 16 | 98.1°F (1931) | 34.0°F (1937) | 1.30 in (1897) |
| September 17 | 102.9°F (1895) | 33.1°F (1981) | 2.08 in (1982) |
| September 18 | 102.0°F (1895) | 27.0°F (1901) | 3.15 in (1919) |
| September 19 | 100.0°F (1895) | 27.0°F (1991) | 1.71 in (1965) |
| September 20 | 95.0°F (1998) | 28.0°F (1918) | 2.44 in (1978) |
| September 21 | 98.1°F (1893) | 27.0°F (1918) | 2.10 in (1955) |
| September 22 | 100.9°F (2005) | 26.1°F (1995) | 2.06 in (1993) |
| September 23 | 95.0°F (1937) | 24.1°F (1983) | 1.44 in (1985) |
| September 24 | 90.0°F (1935) | 28.9°F (1942) | 0.77 in (1973) |
| September 25 | 91.9°F (2005) | 30.0°F (1926) | 1.55 in (2007) |
| September 26 | 93.9°F (1998) | 28.9°F (1984) | 3.92 in (1973) |
| September 27 | 93.9°F (1990) | 30.0°F (1984) | 0.79 in (1955) |
| September 28 | 102.9°F (1953) | 25.0°F (1951) | 1.91 in (1973) |
| September 29 | 91.0°F (1981) | 21.9°F (1899) | 0.89 in (1986) |
| September 30 | 93.0°F (2002) | 26.1°F (1895) | 1.65 in (1919) |