September weather in Rochester, IN
The average temperature in Rochester in September is 64.6°F (53.3°F–76.0°F). Average precipitation: 3.20 inches.
September is a fall month in Rochester, and is warmer than the annual average of 50.2°F. Daily temperatures swing about 22.7°F between overnight low and afternoon high. Expect about 8 days with precipitation. Daylight averages about 12h 15m. For travel, September is one of the best months of the year to visit.
Avg High
76.0°F
Avg Low
53.3°F
Precipitation
3.20 in
Daylight
12h 15m
September records in Rochester
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 100.0°F (1953) | 39.9°F (1967) | 2.48 in (1989) |
| September 2 | 100.9°F (1953) | 39.9°F (1967) | 3.89 in (1934) |
| September 3 | 100.0°F (1953) | 39.0°F (1908) | 1.98 in (1993) |
| September 4 | 102.0°F (1925) | 42.1°F (1952) | 4.21 in (1932) |
| September 5 | 100.0°F (1925) | 41.0°F (1957) | 3.20 in (1970) |
| September 6 | 100.0°F (1954) | 36.0°F (1950) | 1.05 in (1929) |
| September 7 | 100.9°F (1939) | 39.0°F (1962) | 2.29 in (1971) |
| September 8 | 98.1°F (1933) | 37.0°F (1986) | 1.71 in (1946) |
| September 9 | 97.0°F (1933) | 39.0°F (1986) | 1.01 in (2009) |
| September 10 | 97.0°F (1955) | 39.0°F (1969) | 2.36 in (1992) |
| September 11 | 97.0°F (1931) | 36.0°F (1967) | 1.55 in (2014) |
| September 12 | 99.0°F (1925) | 35.1°F (1955) | 1.33 in (1936) |
| September 13 | 102.0°F (1939) | 34.0°F (1964) | 2.13 in (1910) |
| September 14 | 102.0°F (1939) | 35.1°F (1963) | 1.90 in (1972) |
| September 15 | 102.9°F (1939) | 36.0°F (1963) | 4.30 in (1966) |
| September 16 | 99.0°F (1939) | 30.9°F (1916) | 4.17 in (1958) |
| September 17 | 93.0°F (1955) | 33.1°F (1959) | 2.15 in (1980) |
| September 18 | 95.0°F (1955) | 30.9°F (1959) | 2.75 in (1907) |
| September 19 | 95.0°F (1955) | 34.0°F (1929) | 1.98 in (2015) |
| September 20 | 95.0°F (1955) | 35.1°F (1929) | 2.29 in (1997) |
| September 21 | 98.1°F (2000) | 32.0°F (1962) | 1.30 in (2014) |
| September 22 | 93.0°F (2010) | 34.0°F (1983) | 1.78 in (2021) |
| September 23 | 91.0°F (1956) | 28.9°F (1995) | 1.30 in (1965) |
| September 24 | 91.0°F (1935) | 28.9°F (1983) | 1.33 in (1961) |
| September 25 | 91.0°F (2007) | 30.0°F (1928) | 1.55 in (2011) |
| September 26 | 89.1°F (1916) | 33.1°F (1940) | 1.73 in (2011) |
| September 27 | 89.1°F (1998) | 28.9°F (1909) | 2.80 in (1933) |
| September 28 | 91.0°F (1905) | 28.0°F (1951) | 4.00 in (2019) |
| September 29 | 88.0°F (1929) | 28.0°F (1951) | 2.27 in (1999) |
| September 30 | 97.0°F (1953) | 33.1°F (1947) | 1.29 in (1906) |