September weather in Mapleton, IA
The average temperature in Mapleton in September is 62.6°F (49.8°F–75.3°F). Average precipitation: 3.12 inches.
September is a fall month in Mapleton, and is warmer than the annual average of 47.2°F. Daily temperatures swing about 25.5°F between overnight low and afternoon high. Expect about 8 days with precipitation. Daylight averages about 12h 16m. For travel, September is a comfortable month to visit.
Avg High
75.3°F
Avg Low
49.8°F
Precipitation
3.12 in
Daylight
12h 16m
September records in Mapleton
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 93.9°F (1953) | 36.0°F (1949) | 1.54 in (2013) |
| September 2 | 102.9°F (2000) | 42.1°F (1946) | 1.00 in (1942) |
| September 3 | 100.9°F (1939) | 33.1°F (1974) | 1.12 in (1964) |
| September 4 | 97.0°F (2023) | 37.0°F (1974) | 1.80 in (1994) |
| September 5 | 97.0°F (2012) | 37.0°F (1962) | 1.40 in (2018) |
| September 6 | 104.0°F (1939) | 39.0°F (1956) | 3.10 in (1938) |
| September 7 | 100.9°F (1939) | 37.0°F (1944) | 1.22 in (1997) |
| September 8 | 98.1°F (1947) | 37.0°F (1995) | 1.21 in (1960) |
| September 9 | 96.1°F (1938) | 36.0°F (1943) | 1.57 in (1951) |
| September 10 | 95.0°F (2013) | 36.0°F (1959) | 1.75 in (1949) |
| September 11 | 95.0°F (1939) | 30.9°F (1955) | 2.27 in (2019) |
| September 12 | 98.1°F (1939) | 32.0°F (1940) | 3.34 in (1982) |
| September 13 | 99.0°F (1939) | 32.0°F (2014) | 2.87 in (1978) |
| September 14 | 98.1°F (1939) | 32.0°F (2014) | 1.23 in (1938) |
| September 15 | 100.9°F (1939) | 30.0°F (1993) | 1.57 in (1983) |
| September 16 | 95.0°F (1955) | 30.0°F (2007) | 1.15 in (1968) |
| September 17 | 93.9°F (1955) | 33.1°F (1980) | 1.04 in (2025) |
| September 18 | 93.0°F (2018) | 32.0°F (1981) | 1.37 in (1960) |
| September 19 | 97.0°F (1939) | 27.0°F (1991) | 1.15 in (1995) |
| September 20 | 91.0°F (1940) | 28.9°F (1943) | 1.80 in (1964) |
| September 21 | 96.1°F (2022) | 30.9°F (1983) | 1.05 in (2018) |
| September 22 | 96.1°F (2005) | 28.0°F (1954) | 1.60 in (1994) |
| September 23 | 93.0°F (2017) | 26.1°F (2012) | 1.48 in (1963) |
| September 24 | 89.1°F (2016) | 27.0°F (1942) | 1.66 in (2015) |
| September 25 | 90.0°F (1956) | 30.0°F (1942) | 1.77 in (2017) |
| September 26 | 91.0°F (1956) | 26.1°F (1984) | 1.72 in (1973) |
| September 27 | 91.0°F (1956) | 25.0°F (1942) | 0.96 in (1965) |
| September 28 | 91.0°F (1953) | 21.9°F (1942) | 2.58 in (1988) |
| September 29 | 91.9°F (2021) | 25.0°F (1984) | 1.06 in (2015) |
| September 30 | 93.9°F (2023) | 24.1°F (1984) | 0.74 in (1961) |