September weather in Vandalia, OH
The average temperature in Vandalia in September is 67.7°F (56.8°F–78.6°F). Average precipitation: 3.31 inches.
September is a fall month in Vandalia, and is warmer than the annual average of 53.9°F. Daily temperatures swing about 21.8°F between overnight low and afternoon high. Expect about 9 days with precipitation. Daylight averages about 12h 15m. For travel, September is one of the best months of the year to visit.
Avg High
78.6°F
Avg Low
56.8°F
Precipitation
3.31 in
Daylight
12h 15m
September records in Vandalia
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 97.0°F (1953) | 44.1°F (1963) | 2.07 in (1961) |
| September 2 | 99.0°F (1953) | 46.0°F (1994) | 1.48 in (1993) |
| September 3 | 97.0°F (2011) | 46.0°F (1994) | 2.30 in (1991) |
| September 4 | 93.9°F (1960) | 42.1°F (1997) | 2.27 in (2011) |
| September 5 | 99.0°F (1954) | 44.1°F (1974) | 1.20 in (2022) |
| September 6 | 100.9°F (1954) | 41.0°F (1962) | 0.80 in (1971) |
| September 7 | 93.9°F (1964) | 42.1°F (1962) | 1.24 in (2012) |
| September 8 | 93.9°F (1960) | 42.1°F (2024) | 2.70 in (2018) |
| September 9 | 95.0°F (1964) | 44.1°F (1979) | 2.25 in (2001) |
| September 10 | 97.0°F (1964) | 44.1°F (1972) | 1.14 in (1997) |
| September 11 | 93.9°F (2013) | 41.0°F (1976) | 1.49 in (1975) |
| September 12 | 93.0°F (2019) | 43.0°F (1955) | 2.19 in (2006) |
| September 13 | 93.9°F (2019) | 37.9°F (1964) | 1.27 in (1979) |
| September 14 | 93.9°F (1998) | 39.0°F (1964) | 2.60 in (1981) |
| September 15 | 90.0°F (1970) | 42.1°F (1974) | 1.60 in (1965) |
| September 16 | 90.0°F (1991) | 39.9°F (1949) | 3.81 in (2005) |
| September 17 | 91.0°F (1955) | 39.0°F (1959) | 0.77 in (2016) |
| September 18 | 91.9°F (1953) | 37.0°F (1959) | 0.77 in (1992) |
| September 19 | 91.9°F (1978) | 39.9°F (2012) | 0.94 in (1966) |
| September 20 | 93.0°F (1978) | 36.0°F (1991) | 0.97 in (1971) |
| September 21 | 93.9°F (2022) | 35.1°F (1962) | 2.26 in (1950) |
| September 22 | 91.0°F (2024) | 36.0°F (1983) | 1.71 in (2021) |
| September 23 | 93.0°F (2010) | 32.0°F (1974) | 2.31 in (1955) |
| September 24 | 91.0°F (2007) | 33.1°F (1950) | 1.50 in (2024) |
| September 25 | 91.0°F (1973) | 36.0°F (1950) | 2.19 in (1993) |
| September 26 | 90.0°F (1998) | 39.9°F (1987) | 3.10 in (2011) |
| September 27 | 91.0°F (1998) | 35.1°F (1991) | 3.73 in (2002) |
| September 28 | 91.0°F (2019) | 36.0°F (1984) | 1.06 in (2016) |
| September 29 | 93.9°F (1953) | 34.0°F (1951) | 1.11 in (1955) |
| September 30 | 93.9°F (2019) | 35.1°F (1993) | 0.51 in (1986) |