September weather in Franklin, IL
The average temperature in Franklin in September is 66.7°F (53.5°F–80.0°F). Average precipitation: 3.50 inches.
September is a fall month in Franklin, and is warmer than the annual average of 52.7°F. Daily temperatures swing about 26.5°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
80.0°F
Avg Low
53.5°F
Precipitation
3.50 in
Daylight
12h 15m
September records in Franklin
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 102.9°F (1913) | 39.9°F (1967) | 4.60 in (2012) |
| September 2 | 102.9°F (2011) | 43.0°F (1987) | 3.03 in (1914) |
| September 3 | 102.9°F (1913) | 39.9°F (1952) | 3.26 in (1993) |
| September 4 | 102.9°F (1899) | 39.9°F (1974) | 2.30 in (1926) |
| September 5 | 104.0°F (1899) | 39.9°F (1974) | 1.78 in (2008) |
| September 6 | 106.0°F (1899) | 39.0°F (1988) | 1.04 in (1895) |
| September 7 | 102.9°F (1899) | 37.9°F (1988) | 1.18 in (2009) |
| September 8 | 99.0°F (1922) | 35.1°F (1986) | 3.30 in (1926) |
| September 9 | 100.9°F (1925) | 35.1°F (1986) | 3.72 in (1926) |
| September 10 | 100.0°F (1897) | 39.9°F (1969) | 1.74 in (2014) |
| September 11 | 102.9°F (1897) | 35.1°F (1917) | 2.15 in (2014) |
| September 12 | 102.9°F (1897) | 35.1°F (1940) | 1.70 in (2006) |
| September 13 | 100.0°F (1897) | 34.0°F (1902) | 3.51 in (1928) |
| September 14 | 100.0°F (1939) | 36.0°F (1923) | 3.35 in (1961) |
| September 15 | 100.9°F (1939) | 35.1°F (1996) | 2.49 in (1921) |
| September 16 | 97.0°F (1927) | 33.1°F (1916) | 4.53 in (1965) |
| September 17 | 97.0°F (1927) | 32.0°F (1937) | 2.25 in (1896) |
| September 18 | 95.0°F (1895) | 33.1°F (1901) | 1.76 in (1968) |
| September 19 | 96.1°F (1925) | 35.1°F (1901) | 3.86 in (1975) |
| September 20 | 96.1°F (1931) | 30.9°F (1896) | 1.19 in (1986) |
| September 21 | 97.0°F (2017) | 30.9°F (1991) | 4.00 in (2009) |
| September 22 | 96.1°F (1956) | 32.0°F (1913) | 1.71 in (1945) |
| September 23 | 97.0°F (2017) | 28.9°F (1995) | 5.02 in (1993) |
| September 24 | 95.0°F (2017) | 28.9°F (1989) | 1.34 in (1986) |
| September 25 | 93.9°F (2017) | 30.0°F (1995) | 2.96 in (1961) |
| September 26 | 97.0°F (1897) | 28.0°F (1928) | 2.10 in (1923) |
| September 27 | 91.9°F (2017) | 30.0°F (1940) | 2.27 in (1936) |
| September 28 | 93.9°F (1939) | 25.0°F (1942) | 4.11 in (1911) |
| September 29 | 100.0°F (1953) | 28.9°F (1899) | 1.86 in (1999) |
| September 30 | 93.0°F (1922) | 23.0°F (1899) | 1.55 in (1923) |