September weather in Lewisville, IN
The average temperature in Lewisville in September is 64.6°F (52.0°F–77.2°F). Average precipitation: 3.07 inches.
September is a fall month in Lewisville, and is warmer than the annual average of 50.4°F. Daily temperatures swing about 25.2°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
77.2°F
Avg Low
52.0°F
Precipitation
3.07 in
Daylight
12h 15m
September records in Lewisville
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 96.1°F (1953) | 42.1°F (1967) | 2.70 in (2003) |
| September 2 | 100.9°F (1953) | 42.1°F (1967) | 2.03 in (2003) |
| September 3 | 100.0°F (1953) | 39.9°F (1996) | 1.57 in (1993) |
| September 4 | 98.1°F (2011) | 41.0°F (1997) | 1.00 in (2000) |
| September 5 | 93.0°F (1954) | 41.0°F (1997) | 1.17 in (2021) |
| September 6 | 98.1°F (1954) | 41.0°F (1962) | 0.96 in (1971) |
| September 7 | 98.1°F (1954) | 39.0°F (1988) | 3.45 in (1971) |
| September 8 | 93.0°F (1964) | 36.0°F (1956) | 2.89 in (2012) |
| September 9 | 93.0°F (1960) | 37.0°F (2024) | 1.62 in (2018) |
| September 10 | 95.0°F (1955) | 37.9°F (2024) | 2.44 in (1997) |
| September 11 | 98.1°F (2013) | 37.9°F (1993) | 2.39 in (2014) |
| September 12 | 97.0°F (2013) | 37.0°F (1955) | 1.59 in (1975) |
| September 13 | 91.9°F (2019) | 37.0°F (1964) | 0.94 in (1995) |
| September 14 | 91.0°F (1956) | 34.0°F (1953) | 1.55 in (1977) |
| September 15 | 90.0°F (1991) | 37.0°F (1960) | 2.72 in (1989) |
| September 16 | 90.0°F (1955) | 36.0°F (2011) | 0.97 in (1958) |
| September 17 | 91.0°F (1991) | 30.9°F (1959) | 1.48 in (1996) |
| September 18 | 91.9°F (1955) | 27.0°F (1959) | 1.60 in (1986) |
| September 19 | 93.9°F (1955) | 27.0°F (1959) | 0.82 in (1952) |
| September 20 | 93.0°F (1955) | 35.1°F (1956) | 1.71 in (1966) |
| September 21 | 91.9°F (2024) | 33.1°F (1956) | 1.37 in (2002) |
| September 22 | 95.0°F (2024) | 32.0°F (1953) | 1.45 in (1955) |
| September 23 | 90.0°F (2017) | 30.0°F (1995) | 1.43 in (2021) |
| September 24 | 93.0°F (2010) | 28.9°F (1974) | 1.79 in (1955) |
| September 25 | 91.9°F (2007) | 30.9°F (1983) | 1.82 in (1961) |
| September 26 | 89.1°F (2017) | 33.1°F (1950) | 1.85 in (2011) |
| September 27 | 90.0°F (2017) | 35.1°F (1991) | 1.09 in (2003) |
| September 28 | 90.0°F (1998) | 35.1°F (1991) | 1.72 in (2024) |
| September 29 | 89.1°F (1986) | 30.0°F (1951) | 1.05 in (1999) |
| September 30 | 97.0°F (1953) | 30.9°F (1963) | 1.86 in (1955) |