Big Spanish Channel - Mayo Key Weather Forecast

    • 70
    • 78

    Partly Sunny

    • 70
    • 79

    Partly Sunny

    • 56
    • 78

    Partly Sunny

    • 57
    • 67

    Mostly Sunny

    • 56
    • 69

    Mostly Cloudy

    • 54
    • 67

    Mostly Sunny

Today 24 Jan Monroe Lower Keys

Partly Cloudy, becoming mostly sunny. A slight chance of Showers. Highs near 80. East Winds 5 to 10 Mph. Chance of rain 10 percent.

Tonight 24 Jan Monroe Lower Keys

Partly cloudy. Lows near 70. East Winds 5 to 10 Mph.

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Big Spanish Channel - Mayo Key Temperature Statistics

January Temperature

The Florida Keys - Marathon International Airport (19.3 miles)

  • Lowest 16 January, 2026

    51.1 °F

  • Average January

    69.9 °F

  • Highest 9 January, 2026

    81 °F

Climate (2021–Present)

The Florida Keys - Marathon International Airport (19.3 miles)

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  • Average Low 2021–2026

    75.4 °F

  • Average 2021–2026

    80.1 °F

  • Average High 2021–2026

    85.1 °F
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