Key West - South Side Weather Forecast

    • 83
    • 92

    Mostly Sunny

    • 81
    • 92

    Partly Sunny

    • 82
    • 92

    Mostly Sunny

    • 82
    • 91

    Mostly Sunny

    • 82
    • 91

    Mostly Sunny

    • 82
    • 91

    Mostly Sunny

Today 16 Aug Monroe Lower Keys

Mostly sunny. Highs in the lower 90s. East Winds near 10 Mph.

Tonight 16 Aug Monroe Lower Keys

Partly cloudy. Lows in the lower 80s. East Winds 5 to 10 Mph.

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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

    86.3 °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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