Port Isabel, Texas Weather
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Click for Flood Advisory for Port Isabel, Texas
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Weather Forecast for Port Isabel, Texas : Cameron County
Issued: 2:00 pm CDT Jul 1, 2025 Latitude: 26.0734119 Longitude: -97.2085844 View on Google Maps

MouseOver for Detail Forecast
This Afternoon Tonight Wednesday Thursday Independence Day Saturday Sunday Monday
90% chance of thunderstorms on This Afternoon 60% chance of thunderstorms on Tonight Partly Sunny on Wednesday Partly Sunny on Thursday Partly Sunny on Independence Day Mostly Sunny on Saturday Mostly Sunny on Sunday Mostly Sunny on Monday
High: 84°F Low: 78°F High: 85°F High: 86°F High: 87°F High: 86°F High: 86°F High: 86°F
Low: 80°F Low: 80°F Low: 80°F Low: 79°F Low: 78°F  
Thunderstorms Thunderstorms Partly Sunny Partly Sunny Partly Sunny Mostly Sunny Mostly Sunny Mostly Sunny
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Current Conditions at
PORT ISABEL - (KPIL)
45°
Cloudy
Heavy Rain
as of 1:36 PM CDST
Rel. Humidity: 15%
Visibility: 2 Miles
Pressure: 30.00 in.
Flight Rule: IFR
Wind Data
6 MPH
330° Northwest
Cloud Level(s): Broken at 3900ft, Solid Overcast at 6500ft
Current Conditions at
BROWNSVILLE - (KBRO)
79°
Mostly Cloudy
Thunderstorm In Vicinity Rain Mist
as of 1:39 PM CDST
Rel. Humidity: 83%
Dew Point: 73°F
Visibility: 2 1/2 Miles
Pressure: 29.98 in.
Flight Rule: IFR
Wind Data
8 MPH
0° North
Cloud Level(s): Few at 1300ft, Broken at 2900ft, Broken at 5000ft
Current Conditions at
HARLINGEN - (KHRL)
75°
Cloudy
Light Rain
as of 1:42 PM CDST
Rel. Humidity: 94%
Dew Point: 73°F
Visibility: 9 Miles
Pressure: 29.99 in.
Flight Rule: VFR
Wind Data
7 MPH
050° Northeast
Cloud Level(s): Few at 5500ft, Scattered at 7500ft, Solid Overcast at 10000ft
90% chance of thunderstorms This Afternoon This Afternoon... Showers and possibly a thunderstorm. High near 84. Southeast wind around 14 mph. Chance of precipitation is 90%.
60% chance of thunderstorms Tonight Tonight... Showers and thunderstorms likely before 3am, then a slight chance of showers after 4am. Mostly cloudy, with a low around 78. East southeast wind 8 to 10 mph. Chance of precipitation is 60%.
Partly Sunny on Wednesday Wednesday... Partly sunny, with a high near 85. Southeast wind 9 to 15 mph.
Mostly Cloudy on Wednesday Night Wednesday Night... Mostly cloudy, with a low around 80. Southeast wind 10 to 13 mph.
Partly Sunny on Thursday Thursday... Partly sunny, with a high near 86. Southeast wind 10 to 17 mph.
Mostly Cloudy on Thursday Night Thursday Night... Mostly cloudy, with a low around 80. South southeast wind 11 to 14 mph, with gusts as high as 20 mph.
Partly Sunny on Independence Day Independence Day... Partly sunny, with a high near 87. South southeast wind 11 to 16 mph, with gusts as high as 21 mph.
Cloudy on Friday Night Friday Night... Partly cloudy, with a low around 80. South southeast wind 10 to 14 mph.
Mostly Sunny on Saturday Saturday... Mostly sunny, with a high near 86. Southeast wind 10 to 15 mph.
Cloudy on Saturday Night Saturday Night... Partly cloudy, with a low around 79. Southeast wind 8 to 13 mph.
Mostly Sunny on Sunday Sunday... Mostly sunny, with a high near 86. East southeast wind 7 to 13 mph.
Mostly Clear on Sunday Night Sunday Night... Mostly clear, with a low around 78.
Mostly Sunny on Monday Monday... Mostly sunny, with a high near 86.
Sun Almanac for Port Isabel, Texas
Sunrise: 06:41 AM
Sunset: 8:25 PM
Civil Sunrise:06:15 AM
Civil Sunset: 8:51 PM
Nautical Sunrise: 05:43 AM
Nautical Sunset: 9:22 PM
Astro Sunrise: 05:10 AM
Astro Sunset: 9:55 PM
Any use of the information on this page is at your own risk. This information should not be relied upon in life-threatening situations, potential financial loss situations or in lieu of any officially disseminated information. Visit the National Weather Service for official information.