Port Isabel, TX Weather Forecast
Local 7-day forecast
Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Port Isabel, TX in one place.
Sunny, with a high near 92. Heat index values as high as 108. South southeast wind 10 to 18 mph.
Local Weather Overview
This forecast page for Port Isabel, TX is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Oct 12, 2026 3:32 AM CDT.
The active forecast window currently covers Oct 13 to Oct 18, 2026 for Port Isabel, TX.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Oct 13 to Oct 18, 2026
- Latest sync
- Oct 12, 2026 3:32 AM CDT
- Forecast office
- BRO
- Source
- NOAA / NWS
Daily Outlook
This Week in Port Isabel
Tuesday looks like the warmest upcoming period in Port Isabel at 92 degrees F.
Saturday Night is the coolest period ahead with temperatures near 70 degrees F.
The strongest winds are forecast for Saturday at about 24 to 30 mph NNE.
Precipitation is mentioned in 5 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 12, 2026 3:32 AM CDT
- Coverage
- 6 days
- Time zone
- America/Chicago
- Forecast office
- BRO
- Radar station
- KBRO
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Mostly clear, with a low around 80. Southeast wind 12 to 17 mph.
Mostly sunny, with a high near 89. Southeast wind 12 to 20 mph.
Mostly clear, with a low around 78. Southeast wind 12 to 18 mph.
Sunny, with a high near 87. East southeast wind 12 to 16 mph.
Mostly clear, with a low around 78. East wind 5 to 13 mph.
A chance of rain showers between 7am and 1pm, then a chance of showers and thunderstorms. Sunny, with a high near 85. Northeast wind 6 to 24 mph. Chance of precipitation is 50%.
Showers and thunderstorms likely. Partly cloudy, with a low around 72. North northeast wind around 25 mph. Chance of precipitation is 60%.
Showers and thunderstorms likely before 7am, then a chance of showers and thunderstorms between 7am and 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 78. Chance of precipitation is 60%.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 70. Chance of precipitation is 50%.
A chance of showers and thunderstorms. Mostly sunny, with a high near 79.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tuesday
Oct 13
|
Sunny
|
92°F |
10 to 18 mph
SSE
|
|
Tuesday Night
Oct 13
|
Mostly Clear
|
80°F |
12 to 17 mph
SE
|
|
Wednesday
Oct 14
|
Mostly Sunny
|
89°F |
12 to 20 mph
SE
|
|
Wednesday Night
Oct 14
|
Mostly Clear
|
78°F |
12 to 18 mph
SE
|
|
Thursday
Oct 15
|
Sunny
|
87°F |
12 to 16 mph
ESE
|
|
Thursday Night
Oct 15
|
Mostly Clear
|
78°F |
5 to 13 mph
E
|
|
Friday
Oct 16
|
Chance Rain Showers
|
85°F |
6 to 24 mph
NE
|
|
Friday Night
Oct 16
|
Showers And Thunderstorms Likely
|
72°F |
25 mph
NNE
|
|
Saturday
Oct 17
|
Showers And Thunderstorms Likely then Chance Showers And Thunderstorms
|
78°F |
24 to 30 mph
NNE
|
|
Saturday Night
Oct 17
|
Chance Showers And Thunderstorms
|
70°F |
14 to 22 mph
NNE
|
|
Sunday
Oct 18
|
Chance Showers And Thunderstorms
|
79°F |
14 to 17 mph
NNE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Port Isabel.
