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Port Isabel, TX Weather Forecast

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Port Isabel, TX Weather Forecast

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Port Isabel TX weather - Mostly Clear - 86°F
Mostly Clear
86°F
Updated 3:03 pm
Feels Like 91°F
Humidity 74%
Wind N 18 mph
Barometer  29.86 in
Dew Point 77°F
Port Isabel TX weather - Mostly Clear - 30°C
Mostly Clear
30°C
Updated 3:03 pm
Feels Like 33°C
Humidity 74%
Wind N 29 km/h
Barometer  101.1 kPa
Dew Point 25°C
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Port Isabel Weather Forecast

THIS AFTERNOON TONIGHT WEDNESDAY WEDNESDAY NIGHT THURSDAY THURSDAY NIGHT FRIDAY FRIDAY NIGHT SATURDAY SATURDAY NIGHT SUNDAY SUNDAY NIGHT
Port Isabel, TX Weather - This Afternoon Chance Of T-Storm Port Isabel, TX Weather - Tonight Chance Of T-Storm Port Isabel, TX Weather - Wednesday Chance Of T-Storm Port Isabel, TX Weather - Wednesday Night Chance Of T-Storm Port Isabel, TX Weather - Thursday Chance Of T-Storm Port Isabel, TX Weather - Thursday Night Chance Of Showers Port Isabel, TX Weather - Friday Chance Of Showers Port Isabel, TX Weather - Friday Night Mostly Clear Port Isabel, TX Weather - Saturday Mostly Sunny Port Isabel, TX Weather - Saturday Night Partly Cloudy Port Isabel, TX Weather - Sunday Mostly Sunny Port Isabel, TX Weather - Sunday Night Partly Cloudy
Chance of T-Storm Chance of T-Storm Chance of T-Storm Chance of T-Storm Chance of T-Storm Chance of Showers Chance of Showers Mostly Clear Mostly Sunny Partly Cloudy Mostly Sunny Partly Cloudy
Hi: 85°FHi: 29°C
 Lo: 79°FLo: 26°C Hi: 89°FHi: 32°C
 Lo: 79°FLo: 26°C Hi: 89°FHi: 32°C
 Lo: 79°FLo: 26°C Hi: 89°FHi: 32°C
 Lo: 75°FLo: 24°C Hi: 89°FHi: 32°C
 Lo: 75°FLo: 24°C Hi: 89°FHi: 32°C
 Lo: 79°FLo: 26°C
POP: 90% POP: 70% POP: 90% POP: 50% POP: 70% POP: 50% POP: 40%
POP = Probability of Precipitation.
Weather Outlook Updated: 128 PM CDT Tue Oct 06 2026 Port Isabel, TX Weather - WeatherWorld.com

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Issued: 211 PM CDT Tue Oct 6 2026

Key Messages

Updated at 148 PM CDT Tue Oct 6 2026
  • Medium to likely (40-80%+) chances of rain continue along/east of US-281 through tomorrow (highest along the coast) becoming a region-wide low to medium (30-60%) chance on Thursday before gradually reducing over the weekend.
  • The National Hurricane Center (NHC) indicates a high (near 100%) chance of tropical development of a low pressure system, currently situated over the southwestern Gulf, through the next 7 days.
  • While direct impacts are not exp...