September weather in Jefferson, TX
The average temperature in Jefferson in September is 76.2°F (63.6°F–88.7°F). Average precipitation: 3.77 inches.
September is a fall month in Jefferson, and is warmer than the annual average of 64.7°F. Daily temperatures swing about 25.1°F between overnight low and afternoon high. Expect about 6 days with precipitation. Daylight averages about 12h 11m. For travel, September is hot.
Avg High
88.7°F
Avg Low
63.6°F
Precipitation
3.77 in
Daylight
12h 11m
September records in Jefferson
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 108.0°F (2000) | 59.0°F (1988) | 2.61 in (1950) |
| September 2 | 106.0°F (2000) | 52.0°F (1987) | 1.23 in (2008) |
| September 3 | 105.1°F (2000) | 55.0°F (1987) | 4.65 in (1931) |
| September 4 | 107.1°F (2000) | 53.1°F (1988) | 2.01 in (2009) |
| September 5 | 107.1°F (2000) | 50.0°F (1982) | 1.96 in (1968) |
| September 6 | 100.9°F (2013) | 51.1°F (1982) | 2.00 in (1962) |
| September 7 | 102.9°F (2023) | 46.9°F (2011) | 4.76 in (1937) |
| September 8 | 105.1°F (2023) | 46.0°F (2011) | 2.05 in (1990) |
| September 9 | 102.0°F (2019) | 48.9°F (2011) | 1.67 in (1974) |
| September 10 | 97.0°F (2015) | 48.9°F (2024) | 3.05 in (1951) |
| September 11 | 96.1°F (2010) | 52.0°F (2011) | 2.00 in (1966) |
| September 12 | 99.0°F (2011) | 53.1°F (2017) | 2.24 in (2014) |
| September 13 | 102.9°F (2011) | 52.0°F (2015) | 4.76 in (1961) |
| September 14 | 109.0°F (2011) | 51.1°F (1989) | 3.70 in (1913) |
| September 15 | 100.0°F (2011) | 48.9°F (1999) | 4.44 in (2009) |
| September 16 | 98.1°F (2019) | 46.9°F (1993) | 1.74 in (1998) |
| September 17 | 97.0°F (2019) | 44.1°F (2000) | 7.84 in (1950) |
| September 18 | 99.0°F (2010) | 45.0°F (2000) | 3.10 in (1995) |
| September 19 | 99.0°F (2010) | 46.0°F (2000) | 2.21 in (2011) |
| September 20 | 99.0°F (2010) | 48.9°F (1991) | 2.78 in (2019) |
| September 21 | 96.1°F (2010) | 46.0°F (1991) | 4.00 in (2013) |
| September 22 | 96.1°F (2022) | 43.0°F (1982) | 2.65 in (1957) |
| September 23 | 97.0°F (2023) | 41.0°F (1999) | 4.70 in (2018) |
| September 24 | 98.1°F (2000) | 37.9°F (1989) | 2.08 in (1996) |
| September 25 | 96.1°F (2010) | 39.0°F (1989) | 2.26 in (1941) |
| September 26 | 96.1°F (2011) | 37.9°F (1989) | 4.02 in (1960) |
| September 27 | 93.0°F (1993) | 41.0°F (1985) | 2.00 in (1913) |
| September 28 | 93.9°F (1994) | 39.9°F (1985) | 1.20 in (1964) |
| September 29 | 96.1°F (1994) | 44.1°F (1996) | 2.02 in (1945) |
| September 30 | 96.1°F (2011) | 41.0°F (1992) | 2.60 in (1938) |