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New: April-June 2026 Outlook: Warmer than normal temperatures are favored to continue; precipitation is a toss-up; drought, heat risk increases, occasional heavy rain/flooding, & water supply issues are in focus

Current conditions at

Port Isabel, Port Isabel-Cameron County Airport (KPIL)

Lat: 26.16°NLon: 97.34°WElev: 16ft.

Overcast and Breezy

58°F

14°C

Humidity	93%
Wind Speed	NW 21 mph
Barometer	30.16 in (1021.2 mb)
Dewpoint	56°F (13°C)
Visibility	10.00 mi
Last update	5 Apr 5:53 pm CDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

Port Isabel TX

Tonight
Low: 65 °F
Heavy Rain
and Breezy
Monday
High: 70 °F
Showers
Likely and
Breezy
Monday Night
Low: 65 °F
Mostly Cloudy
Tuesday
High: 74 °F
Partly Sunny
then Slight
Chance
Showers
Tuesday Night
Low: 68 °F
Chance
Showers
Wednesday
High: 76 °F
Slight Chance
Showers
Wednesday Night
Low: 71 °F
Mostly Cloudy
then Slight
Chance
Showers
Thursday
High: 77 °F
Slight Chance
T-storms then
Chance
Showers
Thursday Night
Low: 72 °F
Chance
Showers

Detailed Forecast

Tonight

Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Low around 65. Breezy, with a north wind 20 to 24 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

Monday

Showers likely, mainly before 10am. Mostly cloudy, with a high near 70. Breezy, with a north wind 21 to 24 mph. Chance of precipitation is 60%.

Monday Night

Mostly cloudy, with a low around 65. North wind 7 to 16 mph.

Tuesday

A 20 percent chance of showers after 1pm. Partly sunny, with a high near 74. North northeast wind 7 to 13 mph.

Tuesday Night

A 30 percent chance of showers, mainly before 1am. Mostly cloudy, with a low around 68. East wind 7 to 11 mph.

Wednesday

A 20 percent chance of showers. Partly sunny, with a high near 76. East wind 6 to 13 mph.

Wednesday Night

A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 71. East wind 6 to 10 mph.

Thursday

A 30 percent chance of showers and thunderstorms, mainly after 1pm. Mostly cloudy, with a high near 77. East southeast wind 6 to 14 mph.

Thursday Night

A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 72. East southeast wind 7 to 11 mph.

Friday

A chance of showers and thunderstorms. Partly sunny, with a high near 78. East southeast wind 6 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.

Friday Night

Partly cloudy, with a low around 73. Southeast wind 10 to 13 mph.

Saturday

A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 79. Breezy.

Saturday Night

Mostly cloudy, with a low around 73.

Sunday

Partly sunny, with a high near 80. Breezy.