Key West Weather Forecast

    • 80
    • 90

    Slight Chance Thunderstorms

    • 81
    • 90

    Breezy

    • 78
    • 89

    Breezy

    • 77
    • 88

    Mostly Sunny

    • 78
    • 87

    Chance Thunderstorms

    • 78
    • 87

    Chance Thunderstorms

Today 14 Sep Escambia Coastal

Sunny. A slight chance of Showers and Thunderstorms in the afternoon. Humid with Highs in the lower 90s. North Winds around 5 Mph, becoming south in the afternoon. Chance of rain 20 percent. Heat index Values up to 107.

Tonight 14 Sep Escambia Coastal

Mostly clear. Humid with Lows in the mid 70s. West Winds around 5 Mph, becoming northwest after midnight.

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Key West Temperature Statistics

September Temperature

Jack Edwards Airport (9.3 miles)

  • Lowest 2 September, 2026

    75.2 °F

  • Average September

    80.7 °F

  • Highest 7 September, 2026

    95 °F

Climate (2021–2026)

Jack Edwards Airport (9.3 miles)

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  • Average Low 2021–2026

    61 °F

  • Average 2021–2026

    67.7 °F

  • Average High 2021–2026

    78 °F
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