Cat Island Weather Forecast

    • 77
    • 82

    Chance Thunderstorms

    • 75
    • 83

    Partly Sunny

    • 73
    • 83

    Breezy

    • 71
    • 78

    Mostly Sunny

    • 71
    • 78

    Mostly Sunny

    • 72
    • 78

    Sunny

Today 7 Oct Southern Harrison

Partly sunny. Patchy fog in the morning. A slight chance of Showers and Thunderstorms in the Morning, then a chance of Showers and Thunderstorms in the afternoon. Humid with Highs in the mid 80s. East Winds 5 to 10 Mph. Chance of rain 40 percent.

Tonight 7 Oct Southern Harrison

Partly cloudy with a slight chance of Showers and Thunderstorms. Patchy fog. Near steady temperature in the mid 70s. East Winds around 5 Mph. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Cat Island Temperature Statistics

October Temperature

Gulfport - Gulfport-Biloxi International Airport (12.4 miles)

  • Lowest 2 October, 2025

    68 °F

  • Average October

    76.8 °F

  • Highest 1 October, 2025

    86 °F

Climate (2020–Present)

Gulfport - Gulfport-Biloxi International Airport (12.4 miles)

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  • Average Low 2020–2025

    61.5 °F

  • Average 2020–2025

    70.1 °F

  • Average High 2020–2025

    79.1 °F
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