10-Day Weather Forecast - Port Isabel, TX

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  • 86|81°F
    40% Chance of Storms

    Today

    86°F

    Mostly cloudy with a chance of showers and thunderstorms. Near steady temperature in the upper 80s. Southeast winds around 15 mph with gusts up to 20 mph. Chance of rain 40 percent. Heat index values up to 108.

    Tonight

    81°F

    Mostly cloudy with a slight chance of showers and thunderstorms. Humid with lows in the lower 80s. Southeast winds 10 to 15 mph with gusts up to 20 mph. Chance of rain 20 percent. Heat index values up to 105 early.

    Hourly details
  • 87|83°F
    Partly Sunny

    Day

    87°F

    Partly sunny. Humid with highs in the lower 90s. Southeast winds 15 to 20 mph with gusts up to 25 mph. Heat index values up to 111.

    Night

    83°F

    Mostly cloudy. Humid with lows in the lower 80s. Southeast winds 15 to 20 mph with gusts up to 25 mph. Heat index values up to 106 early.

    Hourly details
  • 88|81°F
    Sunny

    Day

    88°F

    Sunny with highs in the lower 90s. Southeast winds 15 to 20 mph with gusts up to 30 mph. Heat index values up to 111.

    Night

    81°F

    Mostly clear in the evening then becoming partly cloudy. Lows in the lower 80s. Heat index values up to 105 early.

    Hourly details
  • 88|80°F
    Sunny

    Day

    88°F

    Sunny. Highs in the lower 90s. Heat index values up to 110.

    Night

    80°F

    Mostly clear. Lows around 80. Heat index values up to 105 early in the evening.

    Hourly details
  • 89|80°F
    Sunny

    Day

    89°F

    Sunny. Highs in the lower 90s.

    Night

    80°F

    Mostly clear. Lows in the upper 70s.

    Hourly details
  • 87|82°F
    Sunny

    Day

    87°F

    Sunny. Highs in the lower 90s. Heat index values up to 105.

    Night

    82°F

    Mostly clear. Lows around 80.

    Hourly details
  • 87|81°F
    Sunny

    Day

    87°F

    Sunny. Highs in the lower 90s. Heat index values up to 105.

    Night

    81°F

    Mostly clear. Low temperature around 81F. Dew point will be around 76F with an average humidity of 82%. Winds will be 14 mph from the SE.

  • 87|82°F
    Sunny

    Day

    87°F

    Sunny. High temperature around 87F. Dew point will be around 77F with an average humidity of 77%. Winds will be 17 mph from the SE.

    Night

    82°F

    Clear. Low temperature around 82F. Dew point will be around 77F with an average humidity of 80%. Winds will be 16 mph from the SE.

  • 87|82°F
    Sunny

    Day

    87°F

    Sunny. High temperature around 87F. Dew point will be around 78F with an average humidity of 78%. Winds will be 18 mph from the SE.

    Night

    82°F

    Clear with widely scattered thunderstorms. Chance of storms 25%. Low temperature around 82F. Dew point will be around 77F with an average humidity of 80%. Winds will be 17 mph from the SE.

  • 88|81°F
    30% Chance of Rain

    Day

    88°F

    Sunny with a 30% chance for rain and thunderstorms. High temperature around 88F. Dew point will be around 78F with an average humidity of 76%. Winds will be 18 mph from the SE.

    Night

    81°F

    Clear. Low temperature around 81F. Dew point will be around 77F with an average humidity of 79%. Winds will be 15 mph from the SE.