Key West - South Side Weather Forecast

    • 84
    • 90

    Slight Chance Thunderstorms

    • 84
    • 91

    Slight Chance Thunderstorms

    • 83
    • 91

    Chance Thunderstorms

    • 83
    • 91

    Chance Thunderstorms

    • 83
    • 92

    Chance Thunderstorms

    • 83
    • 92

    Chance Thunderstorms

Today 23 Aug Monroe Lower Keys

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

Tonight 23 Aug Monroe Lower Keys

Partly cloudy with a slight chance of Showers and Thunderstorms. Lows in the lower to mid 80s. East to southeast Winds near 5 Mph, increasing to 5 to 10 Mph. Chance of rain 10 percent.

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Key West - South Side Temperature Statistics

August Temperature

Key West International Airport (1.9 miles)

  • Lowest 6 August, 2026

    74.6 °F

  • Average August

    86.6 °F

  • Highest 1 August, 2026

    93.7 °F

Climate (2021–2026)

Key West International Airport (1.9 miles)

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  • Average Low 2021–2026

    75.7 °F

  • Average 2021–2026

    79.7 °F

  • Average High 2021–2026

    84.1 °F
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