Key West Weather Forecast

    • 68
    • 77

    Chance Rain Showers

    • 70
    • 77

    Mostly Sunny

    • 72
    • 79

    Partly Sunny

    • 73
    • 81

    Mostly Cloudy

    • 72
    • 80

    Partly Sunny

    • 73
    • 80

    Partly Sunny

Today 15 Dec Monroe Lower Keys

Mostly sunny this Morning, then becoming partly cloudy. A chance of Showers and a slight chance of Thunderstorms. Breezy Early, becoming windy. Highs in the mid 70s. North to northeast Winds 15 to 20 Mph, increasing to near 20 Mph. Chance of rain 30 percent.

Tonight 15 Dec Monroe Lower Keys

Partly cloudy with a slight chance of Showers. Windy. Lows in the upper 60s. Northeast Winds near 20 Mph. Chance of rain 20 percent.

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Key West Temperature Statistics

December Temperature

Key West International Airport (3.1 miles)

  • Lowest 11 December, 2025

    66 °F

  • Average December

    75.2 °F

  • Highest 7 December, 2025

    82 °F

Climate (2020–Present)

Key West International Airport (3.1 miles)

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  • Average Low 2020–2025

    75.5 °F

  • Average 2020–2025

    79.5 °F

  • Average High 2020–2025

    83.8 °F
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