Key Biscayne Weather Forecast

    • 81
    • 86

    Rain Showers

    • 80
    • 86

    Rain Showers Likely

    • 81
    • 86

    Chance Thunderstorms

    • 81
    • 86

    Chance Thunderstorms

    • 80
    • 86

    Chance Thunderstorms

    • 79
    • 86

    Chance Thunderstorms

Today 25 Sep Coastal Miami Dade County

Partly sunny with Showers likely with chance of Thunderstorms. Highs in the upper 80s. South Winds 5 to 10 Mph. Chance of rain 70 percent.

Tonight 25 Sep Coastal Miami Dade County

Mostly cloudy with chance of Showers and slight chance of Thunderstorms in the evening. Then partly cloudy with chance of Showers after midnight. Lows in the upper 70s. South Winds 5 to 10 Mph. Chance of rain 40 percent.

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Key Biscayne Temperature Statistics

September Temperature

Miami, Miami International Airport (11.2 miles)

  • Lowest 13 September, 2020

    73.9 °F

  • Average September

    83.6 °F

  • Highest 3 September, 2020

    93 °F

Climate (2010–Present)

Miami, Miami International Airport (11.2 miles)

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  • Average Low 2010–Present

    72.8 °F

  • Average 2010–Present

    78.5 °F

  • Average High 2010–Present

    85.1 °F
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