September weather in Rockport, TX
The average temperature in Rockport in September is 82.6°F (74.5°F–90.6°F). Average precipitation: 5.65 inches.
September is a fall month in Rockport, and is warmer than the annual average of 72.4°F. Daily temperatures swing about 16.1°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 12h 9m. For travel, September is a wet month.
Avg High
90.6°F
Avg Low
74.5°F
Precipitation
5.65 in
Daylight
12h 9m
September records in Rockport
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 98.1°F (2023) | 69.1°F (2001) | 3.78 in (1970) |
| September 2 | 99.0°F (1979) | 70.0°F (1970) | 3.01 in (1972) |
| September 3 | 102.9°F (2011) | 63.0°F (1974) | 2.93 in (1967) |
| September 4 | 100.9°F (2011) | 60.1°F (1974) | 3.33 in (2024) |
| September 5 | 102.9°F (2011) | 57.0°F (1974) | 3.13 in (2019) |
| September 6 | 105.1°F (2000) | 55.0°F (1974) | 1.29 in (2022) |
| September 7 | 97.0°F (2023) | 57.9°F (1974) | 3.80 in (2010) |
| September 8 | 98.1°F (2023) | 62.1°F (1974) | 1.91 in (1983) |
| September 9 | 98.1°F (2023) | 63.0°F (1974) | 1.60 in (2009) |
| September 10 | 97.0°F (2023) | 66.9°F (1974) | 4.69 in (2018) |
| September 11 | 97.0°F (2023) | 66.9°F (1968) | 3.30 in (1971) |
| September 12 | 96.1°F (2023) | 59.0°F (1959) | 2.65 in (2003) |
| September 13 | 97.0°F (2004) | 64.0°F (1960) | 2.25 in (1963) |
| September 14 | 98.1°F (2023) | 62.1°F (1974) | 1.55 in (1973) |
| September 15 | 99.0°F (2023) | 61.0°F (1989) | 5.65 in (2018) |
| September 16 | 98.1°F (2023) | 63.0°F (1979) | 3.49 in (2018) |
| September 17 | 96.1°F (2004) | 64.0°F (1979) | 3.10 in (1988) |
| September 18 | 95.0°F (2004) | 57.9°F (1981) | 3.20 in (1979) |
| September 19 | 95.0°F (2004) | 60.1°F (1971) | 8.15 in (1979) |
| September 20 | 96.1°F (2024) | 57.9°F (1971) | 6.20 in (2010) |
| September 21 | 95.0°F (2005) | 54.0°F (1983) | 1.85 in (2003) |
| September 22 | 97.0°F (2023) | 50.0°F (1995) | 2.50 in (1997) |
| September 23 | 98.1°F (2023) | 52.0°F (1995) | 6.10 in (1967) |
| September 24 | 99.0°F (2005) | 53.1°F (1995) | 2.97 in (1972) |
| September 25 | 102.9°F (2005) | 54.0°F (1989) | 1.81 in (2025) |
| September 26 | 97.0°F (2023) | 53.1°F (1975) | 1.39 in (1970) |
| September 27 | 95.0°F (2023) | 55.0°F (2000) | 4.53 in (1980) |
| September 28 | 93.9°F (2005) | 55.9°F (1967) | 0.57 in (1996) |
| September 29 | 95.0°F (2011) | 54.0°F (1967) | 1.78 in (2007) |
| September 30 | 97.0°F (2005) | 52.0°F (1974) | 3.40 in (1985) |