Helen Key Weather Forecast

    • 76
    • 82

    Rain Showers Likely

    • 77
    • 84

    Rain Showers Likely

    • 79
    • 85

    Rain Showers

    • 79
    • 86

    Rain Showers Likely

    • 79
    • 87

    Rain Showers Likely

    • 78
    • 86

    Chance Thunderstorms

Today 29 Sep Coastal Collier County

Mostly cloudy with a chance of Thunderstorms. Showers Likely, mainly this morning. Highs in the mid 80s. East Winds 5 to 10 Mph, becoming south this afternoon. Chance of rain 60 percent.

Tonight 29 Sep Coastal Collier County

Mostly cloudy with a chance of Showers and Thunderstorms in the Evening, then partly cloudy with a slight chance of Showers after midnight. Lows in the lower 70s. East Winds 5 to 10 Mph. Chance of rain 50 percent.

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Helen Key Temperature Statistics

September Temperature

Naples, Naples Municipal Airport (18.6 miles)

  • Lowest 26 September, 2026

    71.1 °F

  • Average September

    83 °F

  • Highest 9 September, 2026

    93.7 °F

Climate (2021–2026)

Naples, Naples Municipal Airport (18.6 miles)

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  • Average Low 2021–2026

    69.4 °F

  • Average 2021–2026

    77.1 °F

  • Average High 2021–2026

    85.4 °F
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