Big Spanish Channel - Mayo Key Weather Forecast

    • 76
    • 85

    Partly Sunny

    • 77
    • 85

    Slight Chance Thunderstorms

    • 77
    • 85

    Chance Rain Showers

    • 75
    • 84

    Chance Thunderstorms

    • 75
    • 82

    Chance Rain Showers

    • 75
    • 83

    Mostly Sunny

Today 29 Oct Monroe Lower Keys

Mostly sunny with a slight chance of Showers. Highs in the mid 80s. Northeast Winds 5 to 10 Mph. Chance of rain 20 percent.

Tonight 29 Oct Monroe Lower Keys

Partly cloudy with a slight chance of Showers. Lows in the upper 70s. Northeast Winds 5 to 10 Mph. Chance of rain 20 percent.

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Big Spanish Channel - Mayo Key Temperature Statistics

October Temperature

The Florida Keys - Marathon International Airport (19.3 miles)

  • Lowest 25 October, 2026

    72.6 °F

  • Average October

    83 °F

  • Highest 12 October, 2026

    90.6 °F

Climate (2021–2026)

The Florida Keys - Marathon International Airport (19.3 miles)

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  • Average Low 2021–2026

    75.5 °F

  • Average 2021–2026

    80.2 °F

  • Average High 2021–2026

    85.1 °F
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