January weather in Port Isabel, TX
The average temperature in Port Isabel in January is 60.3°F (51.7°F–68.9°F). Average precipitation: 1.45 inches.
January is a winter month in Port Isabel, and is cooler than the annual average of 73.9°F. Daily temperatures swing about 17.2°F between overnight low and afternoon high. Expect about 8 days with precipitation. Daylight averages about 10h 32m. For travel, January is one of the best months of the year to visit.
Avg High
68.9°F
Avg Low
51.7°F
Precipitation
1.45 in
Daylight
10h 32m
January records in Port Isabel
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| January 1 | 86.0°F (1986) | 34.0°F (1947) | 1.03 in (1994) |
| January 2 | 86.0°F (2022) | 28.9°F (1979) | 1.45 in (1988) |
| January 3 | 84.9°F (1985) | 28.9°F (1979) | 0.48 in (1961) |
| January 4 | 82.0°F (1989) | 28.9°F (1947) | 2.00 in (1958) |
| January 5 | 84.9°F (2007) | 32.0°F (1947) | 1.82 in (1958) |
| January 6 | 81.0°F (1946) | 34.0°F (1959) | 1.35 in (1959) |
| January 7 | 82.9°F (2026) | 32.0°F (1996) | 2.16 in (1959) |
| January 8 | 86.0°F (2008) | 33.1°F (1968) | 0.80 in (1986) |
| January 9 | 82.9°F (2026) | 33.1°F (1968) | 0.40 in (1938) |
| January 10 | 84.0°F (2026) | 23.0°F (1962) | 1.35 in (1992) |
| January 11 | 81.0°F (2000) | 24.1°F (1962) | 1.42 in (1961) |
| January 12 | 89.1°F (1936) | 21.9°F (1962) | 1.36 in (1946) |
| January 13 | 82.0°F (2000) | 0.0°F (2010) | 1.50 in (1946) |
| January 14 | 84.0°F (1960) | 0.0°F (2010) | 1.61 in (1987) |
| January 15 | 82.0°F (2020) | 0.0°F (2010) | 1.10 in (2010) |
| January 16 | 80.1°F (1935) | 27.0°F (2024) | 3.70 in (1988) |
| January 17 | 82.9°F (1999) | 27.0°F (2024) | 0.71 in (1934) |
| January 18 | 82.0°F (1938) | 0.0°F (2010) | 0.94 in (1978) |
| January 19 | 84.9°F (2009) | 0.0°F (2010) | 1.33 in (1968) |
| January 20 | 84.0°F (1953) | 0.0°F (2010) | 1.95 in (1989) |
| January 21 | 81.0°F (2000) | 0.0°F (2010) | 1.40 in (1935) |
| January 22 | 84.0°F (1969) | 27.0°F (1930) | 0.80 in (1987) |
| January 23 | 87.1°F (2000) | 28.9°F (1940) | 0.61 in (1985) |
| January 24 | 80.1°F (1990) | 26.1°F (1963) | 0.44 in (2007) |
| January 25 | 87.1°F (2002) | 34.0°F (2014) | 0.55 in (1948) |
| January 26 | 84.0°F (2021) | 28.9°F (2026) | 0.52 in (1937) |
| January 27 | 82.9°F (2002) | 30.0°F (2026) | 1.55 in (1992) |
| January 28 | 81.0°F (1985) | 28.0°F (1948) | 1.25 in (1931) |
| January 29 | 82.9°F (2006) | 28.9°F (1948) | 0.64 in (2014) |
| January 30 | 84.9°F (1965) | 26.1°F (1949) | 1.24 in (1989) |
| January 31 | 82.9°F (2006) | 28.0°F (1951) | 0.62 in (1945) |