Big Spanish Channel - Mayo Key Weather Forecast

    • 75
    • 85

    Mostly Sunny

    • 75
    • 85

    Mostly Sunny

    • 77
    • 86

    Mostly Sunny

    • 76
    • 86

    Slight Chance Thunderstorms

    • 73
    • 86

    Chance Thunderstorms

    • 73
    • 83

    Chance Rain Showers

Today 29 Apr Monroe Lower Keys

Mostly sunny with a slight chance of Showers. Highs in the lower 80s. Southeast Winds 5 to 10 Mph. Chance of rain 10 percent.

Tonight 29 Apr Monroe Lower Keys

Mostly clear with a slight chance of Showers. Lows in the mid 70s. Southeast Winds near 5 Mph. Chance of rain 10 percent.

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Big Spanish Channel - Mayo Key Temperature Statistics

April Temperature

The Florida Keys - Marathon International Airport (19.3 miles)

  • Lowest 11 April, 2026

    72.6 °F

  • Average April

    78.3 °F

  • Highest 18 April, 2026

    83.6 °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 °F
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