Johnson Keys - South End Weather Forecast

    • 82
    • 90

    Rain Showers

    • 82
    • 89

    Rain Showers

    • 82
    • 89

    Rain Showers

    • 82
    • 89

    Rain Showers

    • 83
    • 89

    Rain Showers

    • 82
    • 90

    Rain Showers

Today 14 Aug Monroe Lower Keys

Mostly sunny with a slight chance of Showers and Thunderstorms. Highs near 90. East to southeast Winds 5 to 10 Mph. Chance of rain 20 percent.

Tonight 14 Aug Monroe Lower Keys

Mostly clear with a slight chance of Showers and Thunderstorms. Lows in the lower 80s. Northeast to east Winds 5 to 10 Mph, increasing to near 10 Mph. Chance of rain 20 percent.

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Johnson Keys - South End Temperature Statistics

August Temperature

The Florida Keys - Marathon International Airport (15.5 miles)

  • Lowest 7 August, 2025

    75.7 °F

  • Average August

    85.8 °F

  • Highest 6 August, 2025

    92.6 °F

Climate (2020–Present)

The Florida Keys - Marathon International Airport (15.5 miles)

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  • Average Low 2020–2025

    75.3 °F

  • Average 2020–2025

    80 °F

  • Average High 2020–2025

    85.1 °F
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