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Weather in Port Isabel, TX · National Weather Service + NOAA

Port Isabel has milder winters than most of Texas

Port Isabel has warm winters and warm summers. A typical July afternoon reaches 92°, a January night drops to 52°, and snow is almost unheard of. In November, a normal day reaches 78° and a normal night drops to 61°.

Winter 71°/54°Spring 82°/67°Summer 92°/77°Fall 84°/68°
Right now
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Sunrise 6:39 am · sunset 5:46 pm

Getting the latest forecast from the National Weather Service…

What stands out about Port Isabel’s weather

Read from 30 years of NOAA records. Each one opens the full story on the Climate page.

Climate →
Milder winters than most of TexasJanuary nights average 52°, milder than 1,855 of 1,859 Texas towns.It hardly ever freezesOnly 34% of years see a night at 32° or below.Cool summersJuly afternoons average 92°, cooler than 1,768 of 1,859 Texas towns.Snow is rareAbout 0.2 inches in a normal year, so most winters see none.
A normal year

Where today sits in Port Isabel’s year

Typical highs and lows month by month, from 30 years of NOAA records.

Full climate →
Winter
71° / 54°
Snow is rare
Spring
82° / 67°
Frost is rare by spring
Summer
92° / 77°
95 days reach 90° in a normal year
Fall now
84° / 68°
Mild well into the fall
Best months to be outside
JanFebMarAprNovDec
Highs of 62–84° and lows of 40° or more
How much snow does Port Isabel get?Almost none.When is it wettest?September, with 5.4 inches.Is it warmer than it used to be?+1.2° vs. the 20th century.

Weather talk

Road reports, first frosts and storm memories from neighbors in Port Isabel.

Town Square →
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Forecast, conditions and alerts: National Weather Service. Climate: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000. Temperatures and rainfall come from NOAA’s gridded normals for Port Isabel itself (about a 3-mile square). Snow, frost dates and day counts: the NOAA station at Port Isabel, TX (2 mi). Sunrise and sunset are calculated from the town’s position. Normals are 30-year averages, not a forecast.