September weather in San Patricio, TX
The average temperature in San Patricio in September is 80.4°F (70.6°F–90.2°F). Average precipitation: 3.83 inches.
September is a fall month in San Patricio, and is warmer than the annual average of 71.1°F. Daily temperatures swing about 19.6°F between overnight low and afternoon high. Expect about 9 days with precipitation. Daylight averages about 12h 9m. For travel, September is hot.
Avg High
90.2°F
Avg Low
70.6°F
Precipitation
3.83 in
Daylight
12h 9m
September records in San Patricio
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 102.9°F (2005) | 66.0°F (1995) | 1.60 in (1995) |
| September 2 | 102.9°F (2000) | 68.0°F (1995) | 1.38 in (1978) |
| September 3 | 102.0°F (2000) | 66.0°F (1974) | 1.08 in (2003) |
| September 4 | 105.1°F (2000) | 59.0°F (1974) | 1.10 in (1967) |
| September 5 | 105.1°F (1977) | 55.0°F (1974) | 1.42 in (2022) |
| September 6 | 108.0°F (2000) | 55.0°F (1974) | 2.70 in (1964) |
| September 7 | 100.0°F (1972) | 57.0°F (1974) | 2.79 in (2010) |
| September 8 | 100.9°F (2012) | 59.0°F (1974) | 1.54 in (1977) |
| September 9 | 100.9°F (1997) | 62.1°F (1974) | 3.00 in (1966) |
| September 10 | 100.9°F (1997) | 61.0°F (1974) | 7.73 in (1971) |
| September 11 | 102.0°F (1965) | 64.0°F (1974) | 11.55 in (1971) |
| September 12 | 102.0°F (1982) | 63.0°F (2017) | 2.23 in (2003) |
| September 13 | 102.9°F (1977) | 61.0°F (2017) | 2.55 in (1974) |
| September 14 | 102.9°F (2008) | 61.0°F (2017) | 2.93 in (1974) |
| September 15 | 99.0°F (2023) | 62.1°F (1989) | 0.99 in (1973) |
| September 16 | 100.9°F (1997) | 63.0°F (1989) | 1.96 in (1976) |
| September 17 | 100.9°F (1997) | 62.1°F (1989) | 4.00 in (1964) |
| September 18 | 100.9°F (1997) | 59.0°F (1981) | 2.53 in (2010) |
| September 19 | 99.0°F (1977) | 55.9°F (1971) | 4.10 in (1979) |
| September 20 | 98.1°F (1972) | 57.0°F (1971) | 2.71 in (2010) |
| September 21 | 97.0°F (1972) | 59.0°F (1981) | 8.40 in (1967) |
| September 22 | 99.0°F (2005) | 53.1°F (1983) | 7.65 in (1967) |
| September 23 | 100.0°F (2005) | 51.1°F (1995) | 2.78 in (1967) |
| September 24 | 100.0°F (1977) | 53.1°F (1975) | 2.13 in (1972) |
| September 25 | 104.0°F (2005) | 54.0°F (1975) | 1.02 in (2024) |
| September 26 | 107.1°F (2005) | 53.1°F (1975) | 2.70 in (2016) |
| September 27 | 100.9°F (1977) | 51.1°F (1968) | 3.87 in (1980) |
| September 28 | 102.0°F (2005) | 54.0°F (1967) | 1.09 in (1966) |
| September 29 | 106.0°F (2005) | 52.0°F (1967) | 2.86 in (2012) |
| September 30 | 100.0°F (1977) | 51.1°F (1967) | 4.12 in (1988) |