Big Spanish Channel - Mayo Key Weather Forecast

    • 83
    • 92

    Slight Chance Thunderstorms

    • 82
    • 92

    Chance Thunderstorms

    • 82
    • 92

    Chance Thunderstorms

    • 82
    • 92

    Slight Chance Thunderstorms

    • 82
    • 93

    Partly Sunny

    • 82
    • 93

    Mostly Sunny

    • 82
    • 93

    Partly Sunny

Today 8 Jul Monroe Lower Keys

Mostly sunny with a slight chance of Showers and Thunderstorms. Highs in the lower 90s. East to southeast Winds 10 to 15 Mph, becoming east. Chance of rain 20 percent.

Tonight 8 Jul Monroe Lower Keys

Partly cloudy. Lows in the mid 80s. Southeast Winds 10 to 15 Mph, increasing to near 15 Mph.

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Big Spanish Channel - Mayo Key Temperature Statistics

July Temperature

The Florida Keys - Marathon International Airport (19.3 miles)

  • Lowest 1 July, 2026

    82.7 °F

  • Average July

    87 °F

  • Highest 3 July, 2026

    90.6 °F

Climate (2021–2026)

The Florida Keys - Marathon International Airport (19.3 miles)

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  • Average Low 2021–2026

    75.4 °F

  • Average 2021–2026

    80 °F

  • Average High 2021–2026

    85 °F
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