News Headlines
- New: Quick Summary of Starr County Damaging Wind, Hail, and Flash Flooding March 7-8, 2026
- New! Understand Spring and Summer Hazardous Weather in the RGV with the 2026 Guide
- 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
Current conditions at
Port Isabel, Port Isabel-Cameron County Airport (KPIL)
Lat: 26.16°NLon: 97.34°WElev: 16ft.
Fair
86°F
30°C
| Humidity | 40% |
| Wind Speed | SE 18 G 28 mph |
| Barometer | 30.00 in (1015.8 mb) |
| Dewpoint | 59°F (15°C) |
| Visibility | 10.00 mi |
| Heat Index | 85°F (29°C) |
| Last update | 21 Mar 2:53 pm CDT |
Extended Forecast for
Port Isabel TX
This Afternoon
High: 81 °F
Sunny and
BreezyTonight
Low: 66 °F
Mostly Clear
Sunday
High: 80 °F
Sunny
Sunday Night
Low: 67 °F
Mostly Clear
Monday
High: 80 °F
Sunny
Monday Night
Low: 68 °F
Mostly Clear
Tuesday
High: 81 °F
Slight Chance
ShowersTuesday Night
Low: 68 °F
Mostly Clear
Wednesday
High: 81 °F
Sunny
Detailed Forecast
This Afternoon
Sunny, with a high near 81. Breezy, with a south southeast wind around 18 mph, with gusts as high as 23 mph.
Tonight
Mostly clear, with a low around 66. South southeast wind 11 to 14 mph.
Sunday
Sunny, with a high near 80. South southeast wind 10 to 17 mph, with gusts as high as 22 mph.
Sunday Night
Mostly clear, with a low around 67. South southeast wind 8 to 13 mph.
Monday
Sunny, with a high near 80. South southeast wind 7 to 14 mph.
Monday Night
Mostly clear, with a low around 68. East southeast wind 6 to 10 mph.
Tuesday
A 20 percent chance of showers. Sunny, with a high near 81. Southeast wind 6 to 15 mph.
Tuesday Night
Mostly clear, with a low around 68. Southeast wind 8 to 13 mph.
Wednesday
Sunny, with a high near 81. South southeast wind 7 to 16 mph, with gusts as high as 21 mph.
Wednesday Night
Mostly clear, with a low around 68. Southeast wind 10 to 14 mph.
Thursday
Sunny, with a high near 82. Breezy, with a south southeast wind 10 to 18 mph, with gusts as high as 23 mph.
Thursday Night
Mostly clear, with a low around 69.
Friday
Sunny, with a high near 81. Breezy.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
Forecast AreaABOUT THIS FORECAST
Point Forecast:
Port Isabel TX
26.06°N 97.21°W
26.06°N 97.21°W
3:30 pm CDT Mar 21, 2026
3pm CDT Mar 21, 2026-6pm CDT Mar 27, 2026
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
