September weather in Harker Heights, TX
The average temperature in Harker Heights in September is 78.2°F (66.7°F–89.6°F). Average precipitation: 3.89 inches.
September is a fall month in Harker Heights, and is warmer than the annual average of 66.6°F. Daily temperatures swing about 22.9°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
89.6°F
Avg Low
66.7°F
Precipitation
3.89 in
Daylight
12h 11m
September records in Harker Heights
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 109.9°F (2000) | 63.0°F (1986) | 1.20 in (1986) |
| September 2 | 111.0°F (2000) | 60.1°F (1986) | 2.19 in (2020) |
| September 3 | 109.0°F (2000) | 63.0°F (1987) | 0.83 in (1986) |
| September 4 | 111.9°F (2000) | 62.1°F (1993) | 1.58 in (2001) |
| September 5 | 111.0°F (2000) | 60.1°F (1993) | 0.62 in (2018) |
| September 6 | 111.9°F (2000) | 60.1°F (1988) | 1.95 in (1986) |
| September 7 | 108.0°F (2023) | 54.0°F (2017) | 1.98 in (1980) |
| September 8 | 109.0°F (2023) | 55.0°F (2017) | 11.13 in (2010) |
| September 9 | 105.1°F (2023) | 55.0°F (2024) | 1.49 in (2002) |
| September 10 | 100.9°F (1982) | 55.0°F (2020) | 1.76 in (1980) |
| September 11 | 102.0°F (1982) | 57.9°F (1979) | 1.20 in (1992) |
| September 12 | 106.0°F (2000) | 55.9°F (2017) | 2.68 in (1998) |
| September 13 | 102.9°F (2000) | 57.0°F (2014) | 0.70 in (1987) |
| September 14 | 102.9°F (2000) | 55.0°F (1989) | 1.34 in (1989) |
| September 15 | 100.0°F (2024) | 43.0°F (1995) | 1.78 in (1995) |
| September 16 | 100.0°F (2000) | 26.1°F (1995) | 0.70 in (1996) |
| September 17 | 98.1°F (1997) | 37.9°F (1990) | 1.56 in (1998) |
| September 18 | 98.1°F (1997) | 43.0°F (1995) | 0.45 in (1987) |
| September 19 | 100.9°F (2024) | 46.9°F (1981) | 1.28 in (1996) |
| September 20 | 100.9°F (2021) | 52.0°F (1991) | 1.76 in (1996) |
| September 21 | 100.9°F (1999) | 41.0°F (1994) | 0.49 in (1996) |
| September 22 | 98.1°F (2022) | 45.0°F (1983) | 1.38 in (2018) |
| September 23 | 100.9°F (2000) | 43.0°F (1994) | 1.68 in (1997) |
| September 24 | 102.9°F (2023) | 42.1°F (1994) | 0.50 in (2023) |
| September 25 | 98.1°F (2019) | 45.0°F (1989) | 2.46 in (2016) |
| September 26 | 97.0°F (2019) | 44.1°F (1989) | 0.78 in (2010) |
| September 27 | 96.1°F (2019) | 46.0°F (1994) | 0.51 in (1996) |
| September 28 | 98.1°F (1979) | 46.0°F (1996) | 0.84 in (2021) |
| September 29 | 97.0°F (1979) | 46.0°F (1996) | 1.03 in (2012) |
| September 30 | 97.0°F (1979) | 45.0°F (1984) | 1.04 in (1985) |