Lignumvitae Key - West Side Weather Forecast

    • 69
    • 75

    Chance Rain Showers

    • 70
    • 77

    Partly Sunny

    • 73
    • 77

    Partly Sunny

    • 73
    • 79

    Mostly Cloudy

    • 73
    • 78

    Partly Sunny

    • 73
    • 78

    Partly Sunny

Today 15 Dec Monroe Upper Keys

Partly sunny with a chance of Showers. Windy. Highs in the mid 70s. Northeast Winds near 20 Mph with Gusts up to 30 Mph. Chance of rain 30 percent.

Tonight 15 Dec Monroe Upper 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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Lignumvitae Key - West Side Temperature Statistics

December Temperature

The Florida Keys - Marathon International Airport (24.2 miles)

  • Lowest 11 December, 2025

    66.9 °F

  • Average December

    76.5 °F

  • Highest 1 December, 2025

    82 °F

Climate (2020–Present)

The Florida Keys - Marathon International Airport (24.2 miles)

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  • Average Low 2020–2025

    75.3 °F

  • Average 2020–2025

    80 °F

  • Average High 2020–2025

    85.1 °F
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