September weather in Wilmer, TX
The average temperature in Wilmer in September is 78.1°F (66.2°F–90.0°F). Average precipitation: 2.69 inches.
September is a fall month in Wilmer, and is warmer than the annual average of 66°F. Daily temperatures swing about 23.8°F between overnight low and afternoon high. Expect about 4 days with precipitation. Daylight averages about 12h 11m. For travel, September is hot.
Avg High
90.0°F
Avg Low
66.2°F
Precipitation
2.69 in
Daylight
12h 11m
September records in Wilmer
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 109.9°F (1985) | 59.0°F (1987) | 1.97 in (1970) |
| September 2 | 109.0°F (2000) | 7.0°F (1993) | 1.50 in (2020) |
| September 3 | 109.9°F (2000) | 59.0°F (1974) | 1.65 in (1992) |
| September 4 | 111.0°F (2000) | 55.0°F (1974) | 2.30 in (2007) |
| September 5 | 105.1°F (2023) | 54.0°F (1974) | 1.53 in (1943) |
| September 6 | 107.1°F (2023) | 6.1°F (1993) | 1.03 in (1962) |
| September 7 | 109.0°F (2023) | 53.1°F (2017) | 2.53 in (2010) |
| September 8 | 111.0°F (2023) | 55.0°F (2017) | 5.33 in (2010) |
| September 9 | 102.0°F (1972) | 55.9°F (2004) | 3.68 in (2007) |
| September 10 | 100.0°F (1984) | 54.0°F (2021) | 0.68 in (1974) |
| September 11 | 100.0°F (1963) | 53.1°F (1968) | 1.18 in (1974) |
| September 12 | 105.1°F (2011) | 55.0°F (1968) | 1.32 in (2009) |
| September 13 | 109.0°F (2011) | 7.0°F (1993) | 3.52 in (2009) |
| September 14 | 102.9°F (1965) | 52.0°F (1989) | 1.63 in (2009) |
| September 15 | 100.9°F (1980) | 51.1°F (1993) | 3.84 in (1967) |
| September 16 | 102.0°F (1980) | 51.1°F (1979) | 1.35 in (1950) |
| September 17 | 99.0°F (1997) | 5.0°F (1993) | 2.98 in (1964) |
| September 18 | 100.9°F (1980) | 9.0°F (1993) | 0.50 in (1996) |
| September 19 | 100.0°F (2016) | 51.1°F (1991) | 2.25 in (2013) |
| September 20 | 102.0°F (2021) | 46.9°F (1971) | 6.32 in (1958) |
| September 21 | 100.9°F (2005) | 46.9°F (1983) | 3.68 in (2018) |
| September 22 | 102.0°F (2005) | 42.1°F (1983) | 4.13 in (1964) |
| September 23 | 100.0°F (2005) | 43.0°F (1994) | 2.00 in (2024) |
| September 24 | 102.0°F (2023) | 46.0°F (1989) | 1.62 in (1960) |
| September 25 | 102.9°F (2005) | 7.0°F (1993) | 1.53 in (1993) |
| September 26 | 102.9°F (2005) | 45.0°F (2000) | 1.57 in (1970) |
| September 27 | 102.0°F (1977) | 48.0°F (2000) | 6.32 in (1973) |
| September 28 | 102.0°F (2005) | 45.0°F (1967) | 1.57 in (1966) |
| September 29 | 102.0°F (2011) | 5.0°F (1993) | 3.16 in (2012) |
| September 30 | 98.1°F (1977) | 43.0°F (1984) | 2.48 in (1980) |