September weather in Brenham, TX
The average temperature in Brenham in September is 79.1°F (68.4°F–89.8°F). Average precipitation: 4.59 inches.
September is a fall month in Brenham, and is warmer than the annual average of 68°F. Daily temperatures swing about 21.4°F between overnight low and afternoon high. Expect about 7 days with precipitation. Daylight averages about 12h 10m. For travel, September is hot.
Avg High
89.8°F
Avg Low
68.4°F
Precipitation
4.59 in
Daylight
12h 10m
September records in Brenham
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 109.0°F (2000) | 61.0°F (1915) | 1.93 in (1978) |
| September 2 | 108.0°F (2000) | 61.0°F (1915) | 4.55 in (1970) |
| September 3 | 109.0°F (2000) | 60.1°F (1955) | 4.51 in (1991) |
| September 4 | 109.0°F (2000) | 57.0°F (1974) | 2.11 in (1991) |
| September 5 | 113.0°F (2000) | 54.0°F (1974) | 3.61 in (1968) |
| September 6 | 109.9°F (2000) | 54.0°F (1974) | 1.57 in (1973) |
| September 7 | 102.9°F (1963) | 53.1°F (1974) | 1.47 in (1986) |
| September 8 | 105.1°F (1963) | 53.1°F (1974) | 1.65 in (2010) |
| September 9 | 106.0°F (2023) | 57.0°F (1957) | 2.14 in (1921) |
| September 10 | 100.9°F (1925) | 59.0°F (1957) | 5.40 in (1966) |
| September 11 | 102.0°F (1954) | 55.9°F (1907) | 5.00 in (1998) |
| September 12 | 102.0°F (1964) | 54.0°F (1940) | 6.85 in (1961) |
| September 13 | 102.9°F (2011) | 54.0°F (1902) | 2.00 in (1975) |
| September 14 | 104.0°F (2011) | 53.1°F (1902) | 3.38 in (1974) |
| September 15 | 100.9°F (1911) | 52.0°F (1902) | 3.20 in (2000) |
| September 16 | 100.0°F (1911) | 53.1°F (1902) | 2.60 in (1970) |
| September 17 | 100.9°F (1911) | 52.0°F (1961) | 3.35 in (1964) |
| September 18 | 102.0°F (1995) | 50.0°F (1981) | 3.54 in (2006) |
| September 19 | 99.0°F (1925) | 48.0°F (1981) | 2.73 in (1949) |
| September 20 | 102.9°F (1956) | 48.0°F (1981) | 3.06 in (1979) |
| September 21 | 102.0°F (1956) | 48.9°F (2006) | 2.89 in (2013) |
| September 22 | 102.0°F (1909) | 46.0°F (1983) | 3.66 in (1995) |
| September 23 | 102.0°F (2005) | 46.0°F (1983) | 3.32 in (1997) |
| September 24 | 100.0°F (1912) | 50.0°F (1983) | 2.03 in (1915) |
| September 25 | 98.1°F (1977) | 48.9°F (1989) | 1.76 in (1991) |
| September 26 | 105.1°F (2005) | 51.1°F (1975) | 4.04 in (1957) |
| September 27 | 105.1°F (2005) | 43.0°F (1942) | 3.00 in (1902) |
| September 28 | 104.0°F (2005) | 44.1°F (1942) | 1.46 in (1908) |
| September 29 | 102.9°F (2005) | 46.0°F (1967) | 2.61 in (2021) |
| September 30 | 100.0°F (1926) | 46.0°F (1967) | 2.40 in (1985) |