September weather in Rockville, IN
The average temperature in Rockville in September is 65.9°F (52.7°F–79.2°F). Average precipitation: 3.14 inches.
September is a fall month in Rockville, and is warmer than the annual average of 52°F. Daily temperatures swing about 26.5°F between overnight low and afternoon high. Expect about 6 days with precipitation. Daylight averages about 12h 15m. For travel, September is one of the best months of the year to visit.
Avg High
79.2°F
Avg Low
52.7°F
Precipitation
3.14 in
Daylight
12h 15m
September records in Rockville
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 100.9°F (1913) | 44.1°F (1915) | 5.46 in (2003) |
| September 2 | 102.0°F (1913) | 46.0°F (1893) | 1.05 in (1931) |
| September 3 | 102.0°F (1913) | 42.1°F (1908) | 3.95 in (1932) |
| September 4 | 100.0°F (1954) | 42.1°F (1908) | 3.00 in (1898) |
| September 5 | 102.9°F (1899) | 45.0°F (1997) | 2.63 in (1910) |
| September 6 | 102.0°F (1899) | 41.0°F (1924) | 0.72 in (1914) |
| September 7 | 99.0°F (1899) | 41.0°F (1988) | 3.65 in (1927) |
| September 8 | 99.0°F (1960) | 37.9°F (2024) | 3.05 in (2018) |
| September 9 | 98.1°F (1919) | 37.9°F (1986) | 4.75 in (1989) |
| September 10 | 97.0°F (1919) | 37.9°F (1924) | 2.07 in (1911) |
| September 11 | 97.0°F (1897) | 37.0°F (1917) | 1.60 in (1975) |
| September 12 | 98.1°F (1897) | 39.0°F (1955) | 1.30 in (1974) |
| September 13 | 98.1°F (1939) | 36.0°F (1902) | 1.82 in (1928) |
| September 14 | 100.0°F (1939) | 35.1°F (1902) | 3.48 in (1962) |
| September 15 | 100.9°F (1939) | 39.0°F (1923) | 4.02 in (1931) |
| September 16 | 96.1°F (1939) | 32.0°F (1916) | 1.22 in (1918) |
| September 17 | 95.0°F (1927) | 37.0°F (1937) | 2.92 in (1969) |
| September 18 | 96.1°F (1953) | 35.1°F (1901) | 1.95 in (2006) |
| September 19 | 96.1°F (1925) | 33.1°F (1901) | 1.45 in (1957) |
| September 20 | 93.9°F (2018) | 34.0°F (1991) | 2.64 in (1950) |
| September 21 | 93.9°F (1955) | 35.1°F (1897) | 2.80 in (1992) |
| September 22 | 93.9°F (2017) | 34.0°F (1983) | 1.30 in (1906) |
| September 23 | 93.9°F (2017) | 30.9°F (1995) | 1.25 in (1936) |
| September 24 | 93.0°F (2017) | 30.9°F (1928) | 1.42 in (1972) |
| September 25 | 91.9°F (2017) | 32.0°F (1942) | 3.90 in (2018) |
| September 26 | 93.9°F (1897) | 28.9°F (1928) | 2.00 in (1906) |
| September 27 | 91.0°F (1986) | 34.0°F (1899) | 1.27 in (1955) |
| September 28 | 91.0°F (1998) | 25.0°F (1942) | 1.54 in (1945) |
| September 29 | 97.0°F (1953) | 30.9°F (1942) | 1.85 in (1955) |
| September 30 | 90.0°F (1897) | 26.1°F (1899) | 1.26 in (1921) |