National Weather Service

News Headlines

New! Understand Spring and Summer Hazardous Weather in the RGV with the 2026 Guide
New: Winter 2025/2026 Weather and Climate Summary for the RGV - Warm and Dry - and a Hard Freeze - Worsens Drought
March-May (Spring 2026) Outlook: Warmer than normal temperatures are favored to continue; precipitation is a toss-up; drought, wildfire potential, water supply, and heat risk concerns are in focus
The Potential for Wildfire Spread Will Remain Acute through Early March. Stop Wildfires Before they Start with Smokey Bear
El riesgo de propagación de incendios forestales aumenta durante marzo. Revise estas medidas de prevención.
Drought is Worsening and Increasing in Coverage Across the Area as We Head into Spring. Track Its Coverage Here.

Current conditions at

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

Lat: 26.16°NLon: 97.34°WElev: 16ft.

A Few Clouds

76°F

24°C

Humidity	85%
Wind Speed	SE 17 mph
Barometer	29.89 in (1011.9 mb)
Dewpoint	71°F (22°C)
Visibility	10.00 mi
Heat Index	77°F (25°C)
Last update	7 Mar 7:53 am CST

More Information:

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

Extended Forecast for

Port Isabel TX

Today
High: 83 °F
Partly Sunny
Tonight
Low: 71 °F
Mostly Cloudy
then Slight
Chance
T-storms
Sunday
High: 81 °F
Chance
Showers
Sunday Night
Low: 71 °F
Increasing
Clouds
Monday
High: 82 °F
Mostly Cloudy
then Partly
Sunny and
Breezy
Monday Night
Low: 71 °F
Increasing
Clouds
Tuesday
High: 82 °F
Mostly Cloudy
and Breezy
Tuesday Night
Low: 70 °F
Mostly Cloudy
and Breezy
then Mostly
Cloudy
Wednesday
High: 84 °F
Partly Sunny

Detailed Forecast

Today

Partly sunny, with a high near 83. South southeast wind 14 to 17 mph, with gusts as high as 22 mph.

Tonight

A 20 percent chance of showers and thunderstorms after 5am. Increasing clouds, with a low around 71. Southeast wind 6 to 14 mph, with gusts as high as 20 mph.

Sunday

A 40 percent chance of showers. Partly sunny, with a high near 81. East southeast wind 6 to 13 mph.

Sunday Night

Increasing clouds, with a low around 71. South southeast wind 7 to 10 mph.

Monday

Partly sunny, with a high near 82. Breezy, with a south southeast wind 7 to 12 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 23 mph.

Monday Night

Increasing clouds, with a low around 71. South southeast wind around 15 mph, with gusts as high as 23 mph.

Tuesday

Mostly cloudy, with a high near 82. Breezy, with a south southeast wind 14 to 22 mph, with gusts as high as 29 mph.

Tuesday Night

Mostly cloudy, with a low around 70. Breezy, with a south southeast wind 9 to 18 mph, with gusts as high as 25 mph.

Wednesday

Partly sunny, with a high near 84. South wind 8 to 11 mph becoming north northeast in the morning.

Wednesday Night

Partly cloudy, with a low around 63. East wind 8 to 15 mph becoming north after midnight. Winds could gust as high as 20 mph.

Thursday

Sunny, with a high near 74. North wind 14 to 17 mph, with gusts as high as 23 mph.