September weather in Hiawatha, IA
The average temperature in Hiawatha in September is 65.2°F (53.0°F–77.3°F). Average precipitation: 3.96 inches.
September is a fall month in Hiawatha, and is warmer than the annual average of 49.9°F. Daily temperatures swing about 24.3°F between overnight low and afternoon high. Expect about 9 days with precipitation. Daylight averages about 12h 16m. For travel, September is one of the best months of the year to visit.
Avg High
77.3°F
Avg Low
53.0°F
Precipitation
3.96 in
Daylight
12h 16m
September records in Hiawatha
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 98.1°F (1912) | 39.0°F (1949) | 2.70 in (1923) |
| September 2 | 102.9°F (1925) | 41.0°F (1946) | 2.95 in (1997) |
| September 3 | 100.9°F (1913) | 37.0°F (1974) | 1.97 in (1934) |
| September 4 | 105.1°F (1925) | 37.0°F (1974) | 2.24 in (1980) |
| September 5 | 102.0°F (1899) | 41.0°F (1962) | 1.56 in (1943) |
| September 6 | 100.9°F (1922) | 39.9°F (1950) | 1.66 in (1914) |
| September 7 | 100.0°F (1922) | 37.9°F (1956) | 2.08 in (1965) |
| September 8 | 98.1°F (1922) | 37.9°F (1986) | 5.05 in (1941) |
| September 9 | 100.0°F (2013) | 37.9°F (1924) | 2.54 in (2014) |
| September 10 | 98.1°F (1931) | 39.0°F (1976) | 1.56 in (1903) |
| September 11 | 96.1°F (1931) | 35.1°F (1955) | 1.71 in (1963) |
| September 12 | 96.1°F (1927) | 34.0°F (1955) | 2.05 in (1961) |
| September 13 | 96.1°F (1930) | 35.1°F (1953) | 5.01 in (1961) |
| September 14 | 96.1°F (1939) | 35.1°F (1923) | 4.75 in (1967) |
| September 15 | 97.0°F (1939) | 32.0°F (2007) | 7.78 in (1914) |
| September 16 | 98.1°F (1931) | 34.0°F (1937) | 2.73 in (1921) |
| September 17 | 99.0°F (1925) | 37.9°F (1900) | 1.13 in (1987) |
| September 18 | 93.0°F (1930) | 32.0°F (1929) | 5.06 in (1977) |
| September 19 | 98.1°F (1925) | 34.0°F (1991) | 3.40 in (1931) |
| September 20 | 98.1°F (2022) | 30.0°F (1991) | 1.95 in (1907) |
| September 21 | 93.9°F (2017) | 34.0°F (1991) | 2.11 in (1965) |
| September 22 | 93.9°F (1930) | 28.9°F (1974) | 1.32 in (1973) |
| September 23 | 93.9°F (2017) | 30.9°F (2012) | 1.60 in (1985) |
| September 24 | 91.9°F (1920) | 30.0°F (2012) | 1.15 in (1940) |
| September 25 | 93.0°F (1920) | 28.9°F (1928) | 2.04 in (1986) |
| September 26 | 88.0°F (1908) | 24.1°F (1926) | 3.80 in (1930) |
| September 27 | 90.0°F (2021) | 30.9°F (1928) | 1.25 in (1999) |
| September 28 | 96.1°F (1953) | 23.0°F (1942) | 2.01 in (1907) |
| September 29 | 91.9°F (1904) | 26.1°F (1984) | 1.74 in (1954) |
| September 30 | 93.9°F (2023) | 21.9°F (1899) | 2.25 in (1893) |