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
- 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
Current conditions at
Port Isabel, Port Isabel-Cameron County Airport (KPIL)
Lat: 26.16°NLon: 97.34°WElev: 16ft.
Fair
83°F
28°C
| Humidity | 48% |
| Wind Speed | SE 20 G 28 mph |
| Barometer | 30.07 in (1018.3 mb) |
| Dewpoint | 61°F (16°C) |
| Visibility | 10.00 mi |
| Heat Index | 84°F (29°C) |
| Last update | 20 Mar 3:53 pm CDT |
Extended Forecast for
Port Isabel TX
This Afternoon
High: 80 °F
Sunny
Tonight
Low: 66 °F
Mostly Clear
Saturday
High: 81 °F
Sunny
Saturday Night
Low: 67 °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
Sunny
Detailed Forecast
This Afternoon
Sunny, with a high near 80. South southeast wind around 15 mph, with gusts as high as 20 mph.
Tonight
Mostly clear, with a low around 66. South southeast wind 10 to 14 mph.
Saturday
Sunny, with a high near 81. South southeast wind 10 to 17 mph, with gusts as high as 22 mph.
Saturday Night
Mostly clear, with a low around 67. 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 9 to 14 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 5 to 11 mph.
Tuesday
Sunny, with a high near 81. Southeast wind 5 to 15 mph.
Tuesday Night
Mostly clear, with a low around 68. South southeast wind 7 to 11 mph.
Wednesday
Sunny, with a high near 81. Southeast wind 6 to 16 mph.
Wednesday Night
Mostly clear, with a low around 68.
Thursday
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
4:18 pm CDT Mar 20, 2026
4pm CDT Mar 20, 2026-6pm CDT Mar 26, 2026
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
