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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.

Mostly Cloudy

77°F

25°C

Humidity	90%
Wind Speed	E 10 mph
Barometer	30.01 in (1016.0 mb)
Dewpoint	74°F (23°C)
Visibility	10.00 mi
Heat Index	78°F (26°C)
Last update	18 Apr 9:53 pm CDT

More Information:

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

Extended Forecast for

Port Isabel TX

Tonight
Low: 71 °F
Slight Chance
T-storms then
Showers
Likely
Sunday
High: 74 °F
Showers
Likely and
Breezy
Sunday Night
Low: 69 °F
Showers and
Breezy
Monday
High: 76 °F
Showers
Likely
Monday Night
Low: 72 °F
Chance
Showers
Tuesday
High: 78 °F
Chance
Showers
Tuesday Night
Low: 73 °F
Partly Cloudy
Wednesday
High: 80 °F
Mostly Sunny
Wednesday Night
Low: 74 °F
Mostly Clear

Detailed Forecast

Tonight

A slight chance of showers and thunderstorms before 1am, then showers likely and possibly a thunderstorm between 1am and 4am, then a chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 71. North northeast wind 10 to 17 mph. Chance of precipitation is 70%.

Sunday

A chance of showers and thunderstorms before 9am, then showers likely between 9am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 74. Breezy, with a northeast wind 21 to 23 mph, with gusts as high as 28 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

Sunday Night

Showers and possibly a thunderstorm. Low around 69. Breezy, with a northeast wind 11 to 18 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

Monday

Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 76. East wind 11 to 17 mph. Chance of precipitation is 70%.

Monday Night

A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 72. East wind 11 to 16 mph.

Tuesday

A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 78. Southeast wind 10 to 15 mph, with gusts as high as 20 mph.

Tuesday Night

Partly cloudy, with a low around 73. Southeast wind 9 to 14 mph.

Wednesday

Mostly sunny, with a high near 80. Southeast wind 8 to 15 mph.

Wednesday Night

Mostly clear, with a low around 74. East southeast wind 11 to 13 mph.