Big Spanish Channel - Water Key (West End) Weather Forecast

    • 79
    • 89

    Rain Showers

    • 78
    • 88

    Rain Showers

    • 78
    • 87

    Rain Showers

    • 78
    • 87

    Rain Showers

    • 79
    • 88

    Thunderstorms

    • 79
    • 88

    Thunderstorms

Today 16 Sep Monroe Lower Keys

Mostly sunny this Morning, then becoming partly sunny. A chance of Showers and a slight chance of Thunderstorms. Highs in the upper 80s. Variable Winds 5 to 10 Mph, becoming east. Chance of rain 30 percent.

Tonight 16 Sep Monroe Lower Keys

Showers likely with a chance of Thunderstorms. Lows in the upper 70s. East Winds 5 to 10 Mph, becoming northeast to east and increasing to near 10 Mph. Chance of rain 60 percent.

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Big Spanish Channel - Water Key (West End) Temperature Statistics

September Temperature

The Florida Keys - Marathon International Airport (18 miles)

  • Lowest 13 September, 2025

    73.9 °F

  • Average September

    83.4 °F

  • Highest 11 September, 2025

    89.1 °F

Climate (2020–Present)

The Florida Keys - Marathon International Airport (18 miles)

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  • Average Low 2020–2025

    75.4 °F

  • Average 2020–2025

    80 °F

  • Average High 2020–2025

    85.1 °F
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