September weather in Brownstown, IN
The average temperature in Brownstown in September is 66.2°F (54.3°F–78.2°F). Average precipitation: 3.36 inches.
September is a fall month in Brownstown, and is warmer than the annual average of 53.1°F. Daily temperatures swing about 23.9°F between overnight low and afternoon high. Expect about 7 days with precipitation. Daylight averages about 12h 14m. For travel, September is one of the best months of the year to visit.
Avg High
78.2°F
Avg Low
54.3°F
Precipitation
3.36 in
Daylight
12h 14m
September records in Brownstown
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 102.9°F (1953) | 42.1°F (1919) | 1.49 in (2024) |
| September 2 | 102.9°F (1953) | 39.0°F (1909) | 3.20 in (1952) |
| September 3 | 106.0°F (1953) | 43.0°F (1908) | 2.39 in (1932) |
| September 4 | 99.0°F (2011) | 42.1°F (1974) | 1.53 in (1991) |
| September 5 | 100.0°F (1899) | 41.0°F (1974) | 2.26 in (1944) |
| September 6 | 105.1°F (1954) | 37.9°F (1924) | 1.65 in (1948) |
| September 7 | 105.1°F (1954) | 41.0°F (1976) | 1.55 in (1934) |
| September 8 | 105.1°F (1939) | 39.9°F (1956) | 1.16 in (2009) |
| September 9 | 104.0°F (1939) | 39.9°F (1979) | 1.96 in (1909) |
| September 10 | 99.0°F (1912) | 39.0°F (1924) | 1.74 in (2001) |
| September 11 | 99.0°F (1964) | 37.9°F (1917) | 2.07 in (1937) |
| September 12 | 102.0°F (1936) | 36.0°F (1917) | 2.25 in (1975) |
| September 13 | 102.0°F (1936) | 37.0°F (1953) | 2.61 in (2006) |
| September 14 | 104.0°F (1936) | 33.1°F (1923) | 1.67 in (1979) |
| September 15 | 106.0°F (1939) | 32.0°F (1923) | 2.90 in (1956) |
| September 16 | 100.0°F (1936) | 34.0°F (1916) | 2.36 in (1957) |
| September 17 | 96.1°F (1927) | 37.9°F (1937) | 1.35 in (1958) |
| September 18 | 96.1°F (1895) | 36.0°F (1937) | 1.35 in (1931) |
| September 19 | 99.0°F (1953) | 34.0°F (1916) | 1.20 in (2013) |
| September 20 | 98.1°F (1940) | 37.0°F (1918) | 1.70 in (1932) |
| September 21 | 99.0°F (1940) | 34.0°F (1962) | 2.92 in (2009) |
| September 22 | 96.1°F (1955) | 30.9°F (1983) | 1.34 in (2003) |
| September 23 | 93.9°F (1936) | 30.0°F (1974) | 1.64 in (1914) |
| September 24 | 93.9°F (1939) | 28.0°F (1928) | 1.40 in (1955) |
| September 25 | 97.0°F (2007) | 30.9°F (1983) | 1.50 in (1945) |
| September 26 | 91.0°F (1908) | 25.0°F (1928) | 2.01 in (2000) |
| September 27 | 93.0°F (1938) | 35.1°F (1918) | 2.87 in (2002) |
| September 28 | 97.0°F (1939) | 27.0°F (1942) | 2.00 in (1906) |
| September 29 | 93.0°F (1953) | 27.0°F (1942) | 1.78 in (1934) |
| September 30 | 102.0°F (1953) | 30.0°F (1899) | 4.50 in (1893) |