September weather in Hillsboro, TX
The average temperature in Hillsboro in September is 78.3°F (66.0°F–90.5°F). Average precipitation: 3.15 inches.
September is a fall month in Hillsboro, and is warmer than the annual average of 66.1°F. Daily temperatures swing about 24.5°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
90.5°F
Avg Low
66.0°F
Precipitation
3.15 in
Daylight
12h 11m
September records in Hillsboro
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 109.9°F (1939) | 55.0°F (1915) | 2.34 in (1970) |
| September 2 | 109.9°F (1939) | 55.9°F (1915) | 2.49 in (1981) |
| September 3 | 107.1°F (1939) | 53.1°F (1992) | 1.49 in (1953) |
| September 4 | 109.0°F (2000) | 51.1°F (1974) | 3.17 in (1904) |
| September 5 | 105.1°F (1913) | 51.1°F (1974) | 3.34 in (2007) |
| September 6 | 105.1°F (1913) | 51.1°F (1974) | 1.59 in (2007) |
| September 7 | 105.1°F (1922) | 51.1°F (1974) | 2.30 in (1920) |
| September 8 | 109.0°F (2023) | 41.0°F (2024) | 4.11 in (2010) |
| September 9 | 109.9°F (2023) | 51.1°F (2004) | 2.50 in (1951) |
| September 10 | 102.9°F (1936) | 53.1°F (2012) | 1.67 in (2020) |
| September 11 | 102.0°F (1910) | 53.1°F (1968) | 3.50 in (1913) |
| September 12 | 100.9°F (1910) | 52.0°F (1940) | 3.10 in (1913) |
| September 13 | 105.1°F (2011) | 53.1°F (1940) | 2.15 in (1924) |
| September 14 | 108.0°F (2011) | 54.0°F (1945) | 1.43 in (1946) |
| September 15 | 102.9°F (2011) | 48.0°F (1989) | 2.27 in (1968) |
| September 16 | 100.9°F (1911) | 39.9°F (1903) | 2.19 in (1975) |
| September 17 | 100.9°F (1911) | 46.0°F (1903) | 2.50 in (1964) |
| September 18 | 102.0°F (1927) | 43.0°F (1981) | 1.95 in (2006) |
| September 19 | 104.0°F (1933) | 44.1°F (1981) | 3.20 in (1905) |
| September 20 | 104.0°F (1956) | 44.1°F (1971) | 4.21 in (2013) |
| September 21 | 100.9°F (1933) | 44.1°F (1918) | 0.88 in (1934) |
| September 22 | 102.0°F (1926) | 36.0°F (1989) | 3.76 in (1965) |
| September 23 | 99.0°F (2022) | 43.0°F (1995) | 1.90 in (1911) |
| September 24 | 99.0°F (1931) | 45.0°F (1975) | 2.62 in (2024) |
| September 25 | 102.9°F (1931) | 39.0°F (1989) | 2.90 in (1913) |
| September 26 | 102.9°F (2011) | 42.1°F (2000) | 2.35 in (1936) |
| September 27 | 102.9°F (2005) | 37.9°F (1942) | 11.30 in (1936) |
| September 28 | 102.0°F (1953) | 42.1°F (1996) | 2.05 in (1973) |
| September 29 | 104.0°F (1953) | 43.0°F (1924) | 3.00 in (1903) |
| September 30 | 100.9°F (2011) | 39.9°F (1924) | 2.82 in (1988) |