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New: April-June 2026 Outlook: Warmer than normal temperatures are favored to continue; precipitation is a toss-up; drought, heat risk increases, occasional heavy rain/flooding, & water supply issues are in focus

Current conditions at

Port Isabel, Port Isabel-Cameron County Airport (KPIL)

Lat: 26.16°NLon: 97.34°WElev: 16ft.

Overcast

59°F

15°C

Humidity	96%
Wind Speed	W 3 mph
Barometer	30.17 in (1021.5 mb)
Dewpoint	58°F (14°C)
Visibility	10.00 mi
Last update	20 Apr 12:53 am CDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

Port Isabel TX

Overnight
Low: 65 °F
Showers
Likely
Monday
High: 72 °F
Showers
Likely
Monday Night
Low: 72 °F
Chance
T-storms then
Chance
Showers
Tuesday
High: 78 °F
Chance
Showers
Tuesday Night
Low: 73 °F
Mostly Cloudy
Wednesday
High: 80 °F
Mostly Sunny
Wednesday Night
Low: 74 °F
Mostly Clear
Thursday
High: 80 °F
Mostly Sunny
Thursday Night
Low: 75 °F
Partly Cloudy

Detailed Forecast

Overnight

Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 65. East wind 10 to 13 mph becoming south. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

Monday

A chance of showers before 7am, then a chance of showers and thunderstorms between 7am and noon, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 72. West southwest wind 9 to 15 mph becoming east in the afternoon. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.

Monday Night

A 40 percent chance of showers and thunderstorms, mainly between 4am and 5am. Cloudy, then gradually becoming partly cloudy, with a low around 72. East southeast wind 14 to 16 mph.

Tuesday

A slight chance of showers and thunderstorms before 7am, then a chance of showers between 7am and 10am, then a chance of showers and thunderstorms after 10am. Partly sunny, with a high near 78. Southeast wind 11 to 17 mph. Chance of precipitation is 50%.

Tuesday Night

Mostly cloudy, with a low around 73. East southeast wind 10 to 14 mph.

Wednesday

Mostly sunny, with a high near 80. South southeast wind 9 to 15 mph.

Wednesday Night

Mostly clear, with a low around 74. Southeast wind 10 to 13 mph.

Thursday

Mostly sunny, with a high near 80. Southeast wind 10 to 17 mph.

Thursday Night

Partly cloudy, with a low around 75. Southeast wind 14 to 16 mph.

Friday

Mostly sunny, with a high near 81. South southeast wind 14 to 16 mph, with gusts as high as 22 mph.