September weather in Iowa Falls, IA
The average temperature in Iowa Falls in September is 62.7°F (50.6°F–74.8°F). Average precipitation: 3.49 inches.
September is a fall month in Iowa Falls, and is warmer than the annual average of 46.7°F. Daily temperatures swing about 24.2°F between overnight low and afternoon high. Expect about 8 days with precipitation. Daylight averages about 12h 16m. For travel, September is one of the best months of the year to visit.
Avg High
74.8°F
Avg Low
50.6°F
Precipitation
3.49 in
Daylight
12h 16m
September records in Iowa Falls
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 96.1°F (1953) | 35.1°F (1895) | 1.60 in (1931) |
| September 2 | 96.1°F (1925) | 37.9°F (1946) | 1.50 in (1959) |
| September 3 | 100.0°F (1939) | 36.0°F (1974) | 1.78 in (1942) |
| September 4 | 97.0°F (1925) | 36.0°F (1974) | 1.10 in (1968) |
| September 5 | 96.1°F (1913) | 37.9°F (1918) | 2.04 in (1956) |
| September 6 | 100.9°F (1939) | 39.0°F (1950) | 1.82 in (1938) |
| September 7 | 100.9°F (1939) | 36.0°F (1895) | 1.23 in (1965) |
| September 8 | 98.1°F (1931) | 37.0°F (1986) | 3.62 in (2001) |
| September 9 | 98.1°F (1927) | 39.0°F (1924) | 2.85 in (1920) |
| September 10 | 99.0°F (1931) | 32.0°F (1976) | 1.87 in (1896) |
| September 11 | 95.0°F (1931) | 32.0°F (1917) | 3.81 in (2006) |
| September 12 | 98.1°F (1927) | 32.0°F (1902) | 1.98 in (1938) |
| September 13 | 98.1°F (1939) | 30.0°F (1902) | 2.71 in (1978) |
| September 14 | 100.0°F (1939) | 30.0°F (1923) | 2.35 in (1928) |
| September 15 | 99.0°F (1939) | 30.9°F (1904) | 1.45 in (1970) |
| September 16 | 98.1°F (1931) | 30.9°F (1966) | 2.31 in (2016) |
| September 17 | 95.0°F (1925) | 30.0°F (1916) | 1.22 in (2017) |
| September 18 | 93.0°F (1930) | 28.0°F (1894) | 1.70 in (1900) |
| September 19 | 97.0°F (1948) | 32.0°F (1896) | 3.55 in (1965) |
| September 20 | 90.0°F (1940) | 28.0°F (1896) | 1.91 in (2018) |
| September 21 | 95.0°F (2022) | 27.0°F (1918) | 4.15 in (1950) |
| September 22 | 95.0°F (1937) | 26.1°F (1913) | 2.18 in (1994) |
| September 23 | 90.0°F (1930) | 28.0°F (1983) | 1.33 in (1910) |
| September 24 | 89.1°F (1935) | 28.9°F (1942) | 1.06 in (1937) |
| September 25 | 90.0°F (2017) | 26.1°F (1893) | 2.72 in (2009) |
| September 26 | 89.1°F (1956) | 26.1°F (1926) | 3.95 in (1934) |
| September 27 | 89.1°F (1954) | 30.0°F (1893) | 1.38 in (1908) |
| September 28 | 91.0°F (1939) | 23.0°F (1942) | 1.11 in (1965) |
| September 29 | 88.0°F (1897) | 21.9°F (1899) | 1.20 in (1893) |
| September 30 | 91.9°F (1952) | 19.0°F (1899) | 2.74 in (1925) |