Key West - South Side Weather Forecast

    • 74
    • 83

    Slight Chance Rain Showers

    • 73
    • 83

    Chance Rain Showers

    • 69
    • 82

    Chance Rain Showers

    • 69
    • 78

    Chance Rain Showers

    • 68
    • 77

    Mostly Cloudy

    • 70
    • 78

    Partly Sunny

Today 6 Dec Monroe Lower Keys

Mostly Sunny, becoming partly sunny. A slight chance of Showers. Highs in the lower 80s. East to southeast Winds near 5 Mph. Chance of rain 10 percent.

Tonight 6 Dec Monroe Lower Keys

Partly cloudy with a slight chance of Showers. Lows in the mid 70s. East to southeast Winds near 5 Mph. Chance of rain 20 percent.

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Key West - South Side Temperature Statistics

December Temperature

Key West International Airport (1.9 miles)

  • Lowest 3 December, 2025

    71.1 °F

  • Average December

    76.9 °F

  • Highest 1 December, 2025

    81 °F

Climate (2020–Present)

Key West International Airport (1.9 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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