Marco Island Weather Forecast

    • 74
    • 86

    Thunderstorms Likely

    • 74
    • 88

    Thunderstorms Likely

    • 74
    • 90

    Chance Thunderstorms

    • 75
    • 90

    Chance Thunderstorms

    • 76
    • 89

    Chance Thunderstorms

    • 77
    • 88

    Chance Thunderstorms

Today 17 Sep Coastal Collier County

Mostly cloudy. A chance of Showers and Thunderstorms this Morning, then Showers and Thunderstorms likely this afternoon. Highs in the mid 80s. Northeast Winds 5 to 10 Mph. Chance of rain 70 percent.

Tonight 17 Sep Coastal Collier County

Mostly cloudy with a chance of Showers and Thunderstorms. Lows in the lower 70s. Northeast Winds 5 to 10 Mph. Chance of rain 50 percent.

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Marco Island Temperature Statistics

September Temperature

Naples, Naples Municipal Airport (14.3 miles)

  • Lowest 14 September, 2025

    73.9 °F

  • Average September

    82.2 °F

  • Highest 11 September, 2025

    91.9 °F

Climate (2020–Present)

Naples, Naples Municipal Airport (14.3 miles)

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  • Average Low 2020–2025

    69.4 °F

  • Average 2020–2025

    76.9 °F

  • Average High 2020–2025

    85 °F
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