Cat Island Weather Forecast

    • 64
    • 66

    Rain Showers Likely

    • 49
    • 66

    Chance Rain Showers

    • 41
    • 56

    Mostly Cloudy

    • 44
    • 50

    Mostly Cloudy

Today 9 Jan Southern Harrison

Showers likely with a slight chance of Thunderstorms this Morning, then Showers with a chance of Thunderstorms this afternoon. Highs in the mid 70s. South Winds around 10 Mph with Gusts up to 20 Mph. Chance of rain 90 percent.

Tonight 9 Jan Southern Harrison

Cloudy with a chance of Thunderstorms. Showers, mainly in the evening. Near steady temperature in the upper 60s. South Winds 5 to 10 Mph. Chance of rain 90 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Cat Island Temperature Statistics

January Temperature

Gulfport - Gulfport-Biloxi International Airport (12.4 miles)

  • Lowest 1 January, 2026

    36 °F

  • Average January

    60.9 °F

  • Highest 3 January, 2026

    79 °F

Climate (2021–Present)

Gulfport - Gulfport-Biloxi International Airport (12.4 miles)

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  • Average Low 2021–2026

    61.5 °F

  • Average 2021–2026

    70.1 °F

  • Average High 2021–2026

    79.1 °F
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