Big Spanish Channel - Mayo Key Weather Forecast

    • 69
    • 78

    Chance Rain Showers

    • 53
    • 74

    Chance Rain Showers

    • 60
    • 64

    Mostly Sunny

    • 63
    • 73

    Partly Sunny

    • 59
    • 73

    Mostly Sunny

    • 61
    • 71

    Mostly Sunny

Today 14 Jan Monroe Lower Keys

Partly sunny with a chance of Showers and a slight chance of Thunderstorms. Highs in the mid to upper 70s. Variable Winds near 5 Mph, becoming west near 10 Mph. Chance of rain 40 percent.

Tonight 14 Jan Monroe Lower Keys

Mostly cloudy with a chance of Showers and a slight chance of Thunderstorms. Lows in the mid to upper 60s. West to northwest Winds near 10 Mph, becoming west near 15 Mph. Chance of rain 40 percent.

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Big Spanish Channel - Mayo Key Temperature Statistics

January Temperature

The Florida Keys - Marathon International Airport (19.3 miles)

  • Lowest 1 January, 2026

    55.9 °F

  • Average January

    72 °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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