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- WE ARE HIRING: NWS Brownsville/Rio Grande Valley is officially hiring a GS-5/7/9 Meteorologist. Apply today at USAJobs!
- Severe to Extreme Conditions Remain for Parts of the RGV/Ranchlands Headed into Late October. Click Here for Details.
- October-December2026 Outlook - After a brutally hot and dry September, October brings the pattern change to wetter and less hot, with above average rainfall to close out 2026; flash flooding, water supply, & hazardous marine conditions in focus
Current conditions at
Port Isabel, Port Isabel-Cameron County Airport (KPIL)
Lat: 26.16°NLon: 97.34°WElev: 16ft.72°F
22°C
| Humidity | 91% |
| Wind Speed | N 9 mph |
| Barometer | 30.10 in (1019.3 mb) |
| Dewpoint | 69°F (21°C) |
| Visibility | 10.00 mi |
| Last update | 19 Oct 5:53 pm CDT |
Extended Forecast for
Port Isabel TX
Tonight
Low: 74 °F
Slight Chance
Showers then
Mostly ClearTuesday
High: 84 °F
Sunny
Tuesday Night
Low: 75 °F
Chance
ShowersWednesday
High: 83 °F
Showers
LikelyWednesday Night
Low: 75 °F
Chance
ShowersThursday
High: 82 °F
Sunny
Thursday Night
Low: 72 °F
Mostly Clear
Friday
High: 81 °F
Sunny
Friday Night
Low: 74 °F
Mostly Clear
Detailed Forecast
Tonight
A 20 percent chance of showers before 7pm. Partly cloudy, with a low around 74. East northeast wind 10 to 14 mph.
Tuesday
Sunny, with a high near 84. North northeast wind 11 to 16 mph.
Tuesday Night
A 30 percent chance of showers after 3am. Partly cloudy, with a low around 75. North northeast wind 7 to 14 mph.
Wednesday
Showers likely, with thunderstorms also possible after 10am. Mostly sunny, with a high near 83. Northeast wind 8 to 13 mph. Chance of precipitation is 60%.
Wednesday Night
A 30 percent chance of showers. Partly cloudy, with a low around 75. East northeast wind 8 to 11 mph.
Thursday
Sunny, with a high near 82. East northeast wind 9 to 14 mph.
Thursday Night
Mostly clear, with a low around 72. East wind 6 to 11 mph.
Friday
Sunny, with a high near 81. East wind 6 to 11 mph.
Friday Night
Mostly clear, with a low around 74. East wind around 10 mph.
Saturday
Mostly sunny, with a high near 82. East southeast wind 10 to 16 mph.
Saturday Night
Partly cloudy, with a low around 76. East wind 11 to 15 mph.
Sunday
Partly sunny, with a high near 81.
Sunday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 74.
Monday
A 30 percent chance of showers. Partly sunny, with a high near 80.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Port Isabel TX
26.08°N 97.21°W
26.08°N 97.21°W
6:00 pm CDT Oct 19, 2026
6pm CDT Oct 19, 2026-6pm CDT Oct 26, 2026
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