News Headlines
- WE ARE HIRING: NWS Brownsville/Rio Grande Valley is officially hiring a GS-5/7/9 Meteorologist. Apply today at USAJobs!
- New: Hot, Windy, and Rain-Free Weather Since Late June Brought on a Rapid-Onset Drought to Portions of the RGV in Early August
- New: August-October 2026 Outlook - Hotter Than Normal And Mainly Dry Conditions Are Expected To Continue; Could Turn Wetter Towards The Fall; Heat Risk, Drought, Fire Weather, And Water Supply Issues Remain In Focus
- Check Out the 2026 Rio Grande Valley/Deep South Texas Hurricane Guide
- Guia de Huracanes 2026 del Valle del Rio Grande/Extremo Sur de Texas
Current conditions at
Port Isabel, Port Isabel-Cameron County Airport (KPIL)
Lat: 26.16°NLon: 97.34°WElev: 16ft.
Fair
92°F
33°C
| Humidity | 62% |
| Wind Speed | E 18 G 28 mph |
| Barometer | 30.03 in (1016.7 mb) |
| Dewpoint | 77°F (25°C) |
| Visibility | 10.00 mi |
| Heat Index | 106°F (41°C) |
| Last update | 17 Aug 3:53 pm CDT |
Extended Forecast for
4 Miles SSW Port Isabel TX
This Afternoon
High: 89 °F
Slight Chance
T-stormsTonight
Low: 80 °F
Slight Chance
T-storms then
Mostly ClearTuesday
High: 90 °F
Sunny
Tuesday Night
Low: 80 °F
Partly Cloudy
Wednesday
High: 90 °F
Mostly Sunny
Wednesday Night
Low: 81 °F
Mostly Clear
Thursday
High: 91 °F
Mostly Sunny
Thursday Night
Low: 80 °F
Mostly Clear
Friday
High: 95 °F
Mostly Sunny
Detailed Forecast
This Afternoon
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 89. East southeast wind around 15 mph.
Tonight
A 10 percent chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 80. South southeast wind 7 to 13 mph.
Tuesday
Sunny, with a high near 90. Southeast wind 6 to 16 mph.
Tuesday Night
Partly cloudy, with a low around 80. Southeast wind 8 to 14 mph.
Wednesday
Mostly sunny, with a high near 90. Southeast wind 6 to 16 mph.
Wednesday Night
Mostly clear, with a low around 81. Southeast wind 10 to 15 mph.
Thursday
Mostly sunny, with a high near 91. South southeast wind 9 to 17 mph.
Thursday Night
Mostly clear, with a low around 80. Southeast wind 8 to 14 mph.
Friday
Mostly sunny, with a high near 95. South southeast wind 7 to 15 mph.
Friday Night
Mostly clear, with a low around 79. Southeast wind 7 to 13 mph.
Saturday
Sunny, with a high near 95. Southeast wind 7 to 15 mph.
Saturday Night
Mostly clear, with a low around 79.
Sunday
Sunny, with a high near 95.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
4 Miles SSW Port Isabel TX
26.01°N 97.24°W
26.01°N 97.24°W
4:00 pm CDT Aug 17, 2026
4pm CDT Aug 17, 2026-6pm CDT Aug 23, 2026
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