News Headlines
- New: RGV Summer (June-August) Weather and Climate Summary - Early Rain Gives Way to Brutal El Nino-Driven Heat, Drought
- New: September-November 2026 Outlook - Warmer Than Normal Conditions Favored; Precipitation A Toss-Up, But Could Trend Wetter Later This Fall; Heat Risk, Drought, Fire Weather, And Water Supply Issues Remain In Focus
- Rapid-Onset (Flash) Drought Continues to Increase Across the RGV/Deep S. Texas Ranchlands. Click Here for Details.
- The 2026 Atlantic Hurricane Season is Fading...but is not Over Yet. Are You Ready? Know Your Risk, Check Your Plans, Restock Your Kits, and More
Current conditions at
Port Isabel, Port Isabel-Cameron County Airport (KPIL)
Lat: 26.16°NLon: 97.34°WElev: 16ft.
Fair
82°F
28°C
| Humidity | 88% |
| Wind Speed | SE 8 mph |
| Barometer | 29.89 in (1012.0 mb) |
| Dewpoint | 78°F (26°C) |
| Visibility | 10.00 mi |
| Heat Index | 91°F (33°C) |
| Last update | 5 Sep 1:53 am CDT |
Extended Forecast for
4 Miles SSW Port Isabel TX
Overnight

Low: 82 °F
Mostly Clear
Saturday

High: 90 °F
Mostly Sunny
Saturday Night

Low: 82 °F
Partly Cloudy
Sunday
High: 90 °F
Mostly Sunny
then Slight
Chance
T-stormsSunday Night

Low: 81 °F
Mostly Clear
Labor Day

High: 90 °F
Sunny
Monday Night

Low: 81 °F
Mostly Clear
Tuesday

High: 89 °F
Chance
ShowersTuesday Night
Low: 80 °F
Partly Cloudy
then Slight
Chance
T-storms
Detailed Forecast
Overnight
Mostly clear, with a low around 82. South southeast wind around 8 mph.
Saturday
Mostly sunny, with a high near 90. South southeast wind 6 to 16 mph.
Saturday Night
Partly cloudy, with a low around 82. Southeast wind 7 to 14 mph.
Sunday
A slight chance of showers and thunderstorms between 1pm and 2pm. Sunny, with a high near 90. East southeast wind 6 to 15 mph. Chance of precipitation is 20%.
Sunday Night
Mostly clear, with a low around 81. South southeast wind 6 to 14 mph.
Labor Day
Sunny, with a high near 90. East southeast wind 5 to 15 mph.
Monday Night
Mostly clear, with a low around 81. Southeast wind 7 to 14 mph.
Tuesday
A 30 percent chance of showers and thunderstorms, mainly before 1pm. Mostly sunny, with a high near 89. Southeast wind 6 to 15 mph.
Tuesday Night
A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 80. South southeast wind 5 to 11 mph.
Wednesday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92. Light south southeast wind becoming southeast 6 to 11 mph in the morning.
Wednesday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 79. East southeast wind 5 to 10 mph becoming light south southeast after midnight.
Thursday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 93.
Thursday Night
Partly cloudy, with a low around 79.
Friday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 94.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
ABOUT THIS FORECAST
Point Forecast:
4 Miles SSW Port Isabel TX
26.01°N 97.24°W
26.01°N 97.24°W
2:00 am CDT Sep 5, 2026
2am CDT Sep 5, 2026-6pm CDT Sep 11, 2026


