Big Spanish Channel - Mayo Key Weather Forecast

    • 68
    • 80

    Mostly Sunny

    • 69
    • 80

    Mostly Sunny

    • 71
    • 80

    Mostly Sunny

    • 71
    • 81

    Mostly Sunny

    • 70
    • 80

    Chance Rain Showers

    • 70
    • 79

    Partly Sunny

Today 25 Mar Monroe Lower Keys

Mostly sunny. Highs near 80. Northeast to east Winds 5 to 10 Mph, decreasing to near 5 Mph.

Tonight 25 Mar Monroe Lower Keys

Mostly clear. Lows in the upper 60s. Northeast Winds 5 to 10 Mph.

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Big Spanish Channel - Mayo Key Temperature Statistics

March Temperature

The Florida Keys - Marathon International Airport (19.3 miles)

  • Lowest 18 March, 2026

    61.6 °F

  • Average March

    76.3 °F

  • Highest 16 March, 2026

    84.7 °F

Climate (2021–Present)

The Florida Keys - Marathon International Airport (19.3 miles)

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  • Average Low 2021–2026

    75.3 °F

  • Average 2021–2026

    80 °F

  • Average High 2021–2026

    85.1 °F
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