Key West Weather Forecast

    • 75
    • 87

    Mostly Sunny

    • 76
    • 88

    Mostly Sunny

    • 77
    • 89

    Mostly Sunny

    • 76
    • 87

    Partly Sunny

    • 76
    • 86

    Slight Chance Thunderstorms

    • 76
    • 86

    Chance Thunderstorms

Today 18 Sep Escambia Coastal

Sunny. Highs around 90. Northeast Winds around 5 Mph, becoming southeast in the afternoon.

Tonight 18 Sep Escambia Coastal

Clear. Lows in the upper 60s. Northwest Winds around 5 Mph.

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Key West Temperature Statistics

September Temperature

Jack Edwards Airport (9.3 miles)

  • Lowest 11 September, 2025

    64.4 °F

  • Average September

    75.1 °F

  • Highest 6 September, 2025

    89.6 °F

Climate (2021–Present)

Jack Edwards Airport (9.3 miles)

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  • Average Low 2021–2025

    61 °F

  • Average 2021–2025

    68 °F

  • Average High 2021–2025

    77.8 °F
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