Duck Key Weather Forecast

    • 85
    • 88

    Chance Thunderstorms

    • 85
    • 88

    Slight Chance Thunderstorms

    • 85
    • 88

    Slight Chance Thunderstorms

    • 83
    • 88

    Mostly Sunny

    • 84
    • 88

    Mostly Sunny

    • 84
    • 89

    Chance Thunderstorms

Today 9 Aug Monroe Middle Keys

Mostly sunny to partly cloudy with a chance of Showers and a slight chance of Thunderstorms. Highs near 90. East Winds 10 to 15 Mph. Chance of rain 30 percent.

Tonight 9 Aug Monroe Middle Keys

Partly to mostly cloudy with a chance of Showers and a slight chance of Thunderstorms. Lows in the mid 80s. East to southeast Winds 10 to 15 Mph Early, increasing to near 15 Mph. Chance of rain 30 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Duck Key Temperature Statistics

August Temperature

The Florida Keys - Marathon International Airport (8.7 miles)

  • Lowest 3 August, 2026

    79.6 °F

  • Average August

    86.2 °F

  • Highest 1 August, 2026

    91.7 °F

Climate (2021–2026)

The Florida Keys - Marathon International Airport (8.7 miles)

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  • Average Low 2021–2026

    75.4 °F

  • Average 2021–2026

    80.1 °F

  • Average High 2021–2026

    85 °F
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