September weather in Chatsworth, IA
The average temperature in Chatsworth in September is 62.8°F (49.7°F–75.9°F). Average precipitation: 3.25 inches.
September is a fall month in Chatsworth, and is warmer than the annual average of 46.7°F. Daily temperatures swing about 26.2°F between overnight low and afternoon high. Expect about 7 days with precipitation. Daylight averages about 12h 17m. For travel, September is a comfortable month to visit.
Avg High
75.9°F
Avg Low
49.7°F
Precipitation
3.25 in
Daylight
12h 17m
September records in Chatsworth
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 95.0°F (1970) | 36.0°F (1949) | 1.75 in (1992) |
| September 2 | 99.0°F (1956) | 32.0°F (2013) | 3.02 in (1970) |
| September 3 | 95.0°F (1947) | 30.9°F (1974) | 0.97 in (1953) |
| September 4 | 93.0°F (1960) | 39.0°F (1974) | 2.00 in (1965) |
| September 5 | 98.1°F (1947) | 36.0°F (1962) | 2.98 in (2018) |
| September 6 | 100.0°F (1939) | 36.0°F (1956) | 1.39 in (1957) |
| September 7 | 98.1°F (1971) | 32.0°F (1986) | 2.48 in (1964) |
| September 8 | 100.0°F (1947) | 37.0°F (1992) | 2.89 in (1926) |
| September 9 | 96.1°F (1938) | 37.0°F (1943) | 1.28 in (1951) |
| September 10 | 96.1°F (2013) | 36.0°F (1943) | 1.84 in (2003) |
| September 11 | 98.1°F (1939) | 30.9°F (1955) | 2.71 in (2003) |
| September 12 | 100.0°F (1939) | 30.9°F (1940) | 2.20 in (1979) |
| September 13 | 102.0°F (1939) | 33.1°F (2014) | 2.51 in (1938) |
| September 14 | 100.9°F (1939) | 30.9°F (1993) | 2.45 in (1986) |
| September 15 | 99.0°F (1955) | 30.9°F (1993) | 3.52 in (1936) |
| September 16 | 98.1°F (1955) | 30.9°F (1937) | 3.33 in (1987) |
| September 17 | 97.0°F (1955) | 30.9°F (1981) | 7.30 in (1926) |
| September 18 | 95.0°F (1947) | 32.0°F (1973) | 2.89 in (1926) |
| September 19 | 100.0°F (1948) | 24.1°F (1991) | 3.10 in (2018) |
| September 20 | 93.0°F (1998) | 27.0°F (1943) | 3.30 in (1950) |
| September 21 | 97.0°F (1937) | 28.9°F (1999) | 0.50 in (2006) |
| September 22 | 93.9°F (1937) | 27.0°F (1974) | 1.26 in (2006) |
| September 23 | 95.0°F (1938) | 26.1°F (1983) | 3.26 in (2010) |
| September 24 | 89.1°F (2016) | 27.0°F (1942) | 1.34 in (1934) |
| September 25 | 93.0°F (1967) | 28.9°F (2000) | 2.13 in (2005) |
| September 26 | 96.1°F (1990) | 21.9°F (1984) | 1.35 in (1996) |
| September 27 | 96.1°F (1956) | 25.0°F (1942) | 0.58 in (1965) |
| September 28 | 90.0°F (1998) | 21.0°F (1942) | 1.56 in (1973) |
| September 29 | 89.1°F (1981) | 23.0°F (1945) | 2.00 in (1965) |
| September 30 | 89.1°F (1952) | 26.1°F (1984) | 0.90 in (1965) |