September weather in Johnson City, TX
The average temperature in Johnson City in September is 77.3°F (64.3°F–90.2°F). Average precipitation: 3.36 inches.
September is a fall month in Johnson City, and is warmer than the annual average of 67°F. Daily temperatures swing about 25.9°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
90.2°F
Avg Low
64.3°F
Precipitation
3.36 in
Daylight
12h 10m
September records in Johnson City
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 105.1°F (2000) | 45.0°F (2007) | 0.80 in (2003) |
| September 2 | 105.1°F (2000) | 57.0°F (1974) | 1.83 in (1978) |
| September 3 | 107.1°F (2000) | 54.0°F (1974) | 2.22 in (1974) |
| September 4 | 107.1°F (2000) | 50.0°F (1974) | 1.80 in (1991) |
| September 5 | 109.0°F (2000) | 50.0°F (1974) | 2.75 in (2018) |
| September 6 | 109.9°F (2000) | 46.9°F (2011) | 4.19 in (1986) |
| September 7 | 105.1°F (2023) | 46.9°F (2011) | 2.60 in (1980) |
| September 8 | 108.0°F (2023) | 48.0°F (2011) | 3.64 in (2010) |
| September 9 | 104.0°F (2023) | 48.9°F (2011) | 4.76 in (2010) |
| September 10 | 100.9°F (1997) | 48.0°F (1968) | 2.51 in (1994) |
| September 11 | 100.0°F (2013) | 48.9°F (1968) | 2.03 in (2009) |
| September 12 | 102.0°F (2000) | 53.1°F (1968) | 1.83 in (2003) |
| September 13 | 100.9°F (2011) | 54.0°F (1969) | 1.71 in (2000) |
| September 14 | 102.0°F (2011) | 46.9°F (1999) | 6.61 in (2012) |
| September 15 | 100.0°F (2011) | 48.0°F (1999) | 1.05 in (1969) |
| September 16 | 99.0°F (1997) | 48.9°F (1989) | 0.77 in (1998) |
| September 17 | 99.0°F (1997) | 48.9°F (1984) | 2.50 in (2012) |
| September 18 | 100.0°F (2019) | 44.1°F (1981) | 2.50 in (2014) |
| September 19 | 97.0°F (1975) | 39.9°F (1981) | 1.05 in (1991) |
| September 20 | 99.0°F (2023) | 48.9°F (1971) | 3.05 in (1995) |
| September 21 | 99.0°F (2023) | 48.9°F (2006) | 2.40 in (2013) |
| September 22 | 99.0°F (2022) | 37.0°F (1983) | 2.68 in (1965) |
| September 23 | 100.0°F (2023) | 37.9°F (1983) | 1.51 in (1965) |
| September 24 | 105.1°F (2023) | 45.0°F (1983) | 0.56 in (1968) |
| September 25 | 98.1°F (2005) | 37.9°F (1989) | 2.15 in (1970) |
| September 26 | 105.1°F (2005) | 39.9°F (2000) | 0.80 in (2017) |
| September 27 | 105.1°F (2005) | 41.0°F (2000) | 3.70 in (1973) |
| September 28 | 100.9°F (2005) | 41.0°F (2000) | 0.70 in (2011) |
| September 29 | 105.1°F (2005) | 41.0°F (1996) | 2.50 in (2013) |
| September 30 | 98.1°F (2011) | 39.9°F (1992) | 1.09 in (1988) |