September weather in Bloomington, IN
The average temperature in Bloomington in September is 67.1°F (55.8°F–78.5°F). Average precipitation: 3.81 inches.
September is a fall month in Bloomington, and is warmer than the annual average of 53.3°F. Daily temperatures swing about 22.7°F between overnight low and afternoon high. Expect about 8 days with precipitation. Daylight averages about 12h 14m. For travel, September is one of the best months of the year to visit.
Avg High
78.5°F
Avg Low
55.8°F
Precipitation
3.81 in
Daylight
12h 14m
September records in Bloomington
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 100.0°F (1943) | 43.0°F (1915) | 1.83 in (1950) |
| September 2 | 102.0°F (1922) | 42.1°F (1909) | 3.40 in (1931) |
| September 3 | 102.0°F (1913) | 41.0°F (1908) | 4.00 in (1993) |
| September 4 | 100.9°F (1922) | 45.0°F (1997) | 2.00 in (1932) |
| September 5 | 100.9°F (1954) | 45.0°F (1930) | 2.48 in (1937) |
| September 6 | 102.9°F (1922) | 37.9°F (1924) | 2.28 in (1948) |
| September 7 | 100.0°F (1899) | 41.0°F (1909) | 1.22 in (1983) |
| September 8 | 100.9°F (1922) | 43.0°F (2024) | 1.31 in (1972) |
| September 9 | 100.0°F (1933) | 43.0°F (2024) | 4.36 in (2018) |
| September 10 | 97.0°F (1933) | 37.0°F (1924) | 1.27 in (1909) |
| September 11 | 96.1°F (1908) | 37.0°F (1917) | 2.13 in (1965) |
| September 12 | 96.1°F (1897) | 39.0°F (1917) | 2.20 in (1986) |
| September 13 | 99.0°F (1939) | 30.9°F (1899) | 1.33 in (2008) |
| September 14 | 100.9°F (1939) | 32.0°F (1923) | 1.26 in (1925) |
| September 15 | 102.0°F (1939) | 37.0°F (1923) | 3.30 in (1931) |
| September 16 | 98.1°F (1927) | 32.0°F (1916) | 3.26 in (1911) |
| September 17 | 96.1°F (1927) | 37.0°F (1903) | 1.71 in (1968) |
| September 18 | 95.0°F (1953) | 37.0°F (1903) | 3.70 in (2001) |
| September 19 | 93.9°F (1908) | 36.0°F (1916) | 1.59 in (1966) |
| September 20 | 96.1°F (1908) | 37.0°F (1897) | 1.85 in (2005) |
| September 21 | 96.1°F (1940) | 36.0°F (1962) | 1.67 in (2002) |
| September 22 | 95.0°F (2010) | 34.0°F (1918) | 1.95 in (2021) |
| September 23 | 91.9°F (1908) | 33.1°F (1995) | 2.29 in (1914) |
| September 24 | 93.9°F (2010) | 33.1°F (1928) | 2.90 in (2001) |
| September 25 | 93.0°F (2007) | 36.0°F (1942) | 2.75 in (1945) |
| September 26 | 91.0°F (1908) | 30.9°F (1928) | 2.59 in (2000) |
| September 27 | 91.0°F (2017) | 34.0°F (1899) | 1.52 in (1976) |
| September 28 | 91.9°F (1939) | 30.9°F (1942) | 2.14 in (1945) |
| September 29 | 98.1°F (1953) | 27.0°F (1899) | 1.99 in (1927) |
| September 30 | 90.0°F (1953) | 26.1°F (1899) | 1.77 in (1927) |