East Key - Southern End Weather Forecast

    • 69
    • 77

    Partly Sunny

    • 72
    • 77

    Partly Sunny

    • 71
    • 78

    Partly Sunny

    • 71
    • 76

    Breezy

    • 71
    • 76

    Partly Sunny

    • 70
    • 77

    Partly Sunny

    • 71
    • 76

    Partly Sunny

Today 19 Dec Monroe Upper Keys

Partly Sunny, becoming partly cloudy late. A slight chance of Showers. Highs near 80. West Winds 5 to 10 Mph, becoming northwest. Chance of rain 10 percent.

Tonight 19 Dec Monroe Upper Keys

Partly cloudy. Lows in the upper 60s. Northwest Winds near 10 Mph, becoming north to northeast 10 to 15 Mph.

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East Key - Southern End Temperature Statistics

December Temperature

The Florida Keys - Marathon International Airport (32.9 miles)

  • Lowest 11 December, 2025

    66.9 °F

  • Average December

    75.7 °F

  • Highest 1 December, 2025

    82 °F

Climate (2020–Present)

The Florida Keys - Marathon International Airport (32.9 miles)

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  • Average Low 2020–2025

    75.4 °F

  • Average 2020–2025

    80 °F

  • Average High 2020–2025

    85.1 °F
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