September weather in Ashton, IA
The average temperature in Ashton in September is 61.4°F (49.1°F–73.8°F). Average precipitation: 3.25 inches.
September is a fall month in Ashton, and is warmer than the annual average of 44.5°F. Daily temperatures swing about 24.7°F between overnight low and afternoon high. Expect about 8 days with precipitation. Daylight averages about 12h 17m. For travel, September is a comfortable month to visit.
Avg High
73.8°F
Avg Low
49.1°F
Precipitation
3.25 in
Daylight
12h 17m
September records in Ashton
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 93.9°F (1898) | 32.0°F (1949) | 1.03 in (1904) |
| September 2 | 98.1°F (1913) | 35.1°F (1893) | 1.18 in (1904) |
| September 3 | 96.1°F (2023) | 30.0°F (1974) | 1.77 in (2021) |
| September 4 | 95.0°F (1916) | 36.0°F (1902) | 1.82 in (1911) |
| September 5 | 100.0°F (1913) | 33.1°F (1962) | 3.57 in (2018) |
| September 6 | 102.0°F (1913) | 30.9°F (1956) | 1.08 in (1965) |
| September 7 | 100.0°F (1913) | 32.0°F (1956) | 2.11 in (1964) |
| September 8 | 95.0°F (1947) | 37.0°F (1986) | 2.93 in (1960) |
| September 9 | 93.0°F (1912) | 33.1°F (1910) | 2.70 in (1946) |
| September 10 | 91.9°F (2013) | 32.0°F (1959) | 1.95 in (1982) |
| September 11 | 91.0°F (1899) | 23.0°F (1955) | 4.00 in (1900) |
| September 12 | 97.0°F (1939) | 27.0°F (1940) | 2.00 in (1979) |
| September 13 | 98.1°F (1939) | 28.0°F (1902) | 2.59 in (1938) |
| September 14 | 99.0°F (1939) | 30.0°F (1949) | 4.13 in (1896) |
| September 15 | 96.1°F (1955) | 28.0°F (1916) | 4.14 in (2004) |
| September 16 | 93.0°F (1955) | 28.0°F (1918) | 3.88 in (2016) |
| September 17 | 93.0°F (1955) | 23.0°F (1916) | 1.27 in (1907) |
| September 18 | 91.0°F (1898) | 28.0°F (1918) | 1.85 in (1944) |
| September 19 | 93.9°F (1948) | 25.0°F (1991) | 2.41 in (1976) |
| September 20 | 93.0°F (1984) | 23.0°F (1918) | 2.89 in (2018) |
| September 21 | 100.0°F (2022) | 26.1°F (1983) | 1.52 in (2018) |
| September 22 | 91.9°F (1936) | 21.0°F (1913) | 6.03 in (1895) |
| September 23 | 91.9°F (2017) | 24.1°F (1995) | 4.09 in (2010) |
| September 24 | 89.1°F (1897) | 25.0°F (1942) | 0.90 in (1937) |
| September 25 | 91.0°F (1897) | 18.0°F (1893) | 3.20 in (2005) |
| September 26 | 91.0°F (1956) | 23.0°F (1984) | 1.30 in (1910) |
| September 27 | 91.9°F (1956) | 24.1°F (1942) | 1.28 in (1965) |
| September 28 | 93.0°F (1897) | 19.0°F (1942) | 1.80 in (1973) |
| September 29 | 91.9°F (1897) | 15.1°F (1899) | 1.06 in (1982) |
| September 30 | 93.0°F (1897) | 16.0°F (1939) | 2.35 in (1977) |