October weather in Port Isabel, TX
The average temperature in Port Isabel in October is 77.0°F (69.0°F–85.1°F). Average precipitation: 3.86 inches.
October is a fall month in Port Isabel, and is warmer than the annual average of 73.9°F. Daily temperatures swing about 16.1°F between overnight low and afternoon high. Expect about 7 days with precipitation. Daylight averages about 11h 22m. For travel, October is a comfortable month to visit.
Avg High
85.1°F
Avg Low
69.0°F
Precipitation
3.86 in
Daylight
11h 22m
October records in Port Isabel
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| October 1 | 93.0°F (1980) | 55.9°F (1942) | 2.51 in (1958) |
| October 2 | 93.9°F (2009) | 57.9°F (1958) | 2.89 in (1945) |
| October 3 | 93.0°F (1977) | 60.1°F (1965) | 2.65 in (1996) |
| October 4 | 95.0°F (1937) | 60.1°F (1934) | 3.22 in (1996) |
| October 5 | 93.9°F (2023) | 61.0°F (1961) | 1.65 in (1968) |
| October 6 | 95.0°F (1937) | 57.0°F (1985) | 2.17 in (1998) |
| October 7 | 93.0°F (2008) | 52.0°F (1932) | 2.45 in (1930) |
| October 8 | 91.9°F (2009) | 45.0°F (2000) | 2.06 in (2012) |
| October 9 | 95.0°F (2009) | 44.1°F (2000) | 5.62 in (2002) |
| October 10 | 91.9°F (2005) | 44.1°F (2001) | 2.00 in (1937) |
| October 11 | 95.0°F (2008) | 52.0°F (1976) | 1.50 in (1937) |
| October 12 | 95.0°F (2008) | 57.0°F (1994) | 5.55 in (1930) |
| October 13 | 95.0°F (2008) | 53.1°F (1986) | 4.27 in (1995) |
| October 14 | 95.0°F (2008) | 55.9°F (1986) | 5.97 in (1932) |
| October 15 | 95.0°F (2008) | 57.9°F (1986) | 1.45 in (1966) |
| October 16 | 91.9°F (1933) | 59.0°F (2004) | 3.66 in (1941) |
| October 17 | 93.9°F (2013) | 52.0°F (2023) | 1.75 in (1948) |
| October 18 | 91.0°F (2004) | 52.0°F (2023) | 2.90 in (1956) |
| October 19 | 93.9°F (2012) | 50.0°F (2011) | 1.17 in (1965) |
| October 20 | 91.0°F (2004) | 46.0°F (1989) | 0.97 in (1942) |
| October 21 | 96.1°F (1941) | 46.0°F (1989) | 1.55 in (1986) |
| October 22 | 91.0°F (2025) | 51.1°F (2011) | 1.79 in (1985) |
| October 23 | 91.0°F (2004) | 46.0°F (1965) | 2.07 in (1930) |
| October 24 | 90.0°F (2004) | 48.9°F (2005) | 1.89 in (1951) |
| October 25 | 89.1°F (2004) | 44.1°F (1929) | 1.73 in (2002) |
| October 26 | 90.0°F (2004) | 43.0°F (1929) | 1.86 in (2003) |
| October 27 | 90.0°F (1941) | 50.0°F (1929) | 3.90 in (2005) |
| October 28 | 91.9°F (2025) | 52.0°F (1936) | 4.40 in (1976) |
| October 29 | 91.0°F (2025) | 46.9°F (2020) | 3.82 in (1995) |
| October 30 | 91.0°F (2025) | 44.1°F (1980) | 1.82 in (1997) |
| October 31 | 93.0°F (1947) | 37.0°F (1993) | 2.00 in (1928) |