Boot Key Harbor Bridge Weather Forecast

    • 77
    • 87

    Mostly Sunny

    • 77
    • 87

    Mostly Sunny

    • 78
    • 86

    Partly Sunny

    • 79
    • 87

    Rain Showers Likely

    • 79
    • 86

    Rain Showers Likely

    • 80
    • 87

    Rain Showers Likely

    • 81
    • 88

    Rain Showers Likely

Today 25 Sep Monroe Middle Keys

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

Tonight 25 Sep Monroe Middle Keys

Mostly clear with a slight chance of Showers. Lows in the mid to upper 70s. North to northeast Winds near 10 Mph. Chance of rain 10 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Boot Key Harbor Bridge Temperature Statistics

September Temperature

The Florida Keys - Marathon International Airport (3.7 miles)

  • Lowest 20 September, 2026

    77.6 °F

  • Average September

    85.5 °F

  • Highest 1 September, 2026

    92.6 °F

Climate (2021–2026)

The Florida Keys - Marathon International Airport (3.7 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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