Vaca Key - Fat Deer Key Bridge Weather Forecast

    • 78
    • 86

    Mostly Sunny

    • 79
    • 85

    Increasing Clouds

    • 79
    • 86

    Rain Showers Likely

    • 80
    • 86

    Rain Showers Likely

    • 80
    • 86

    Rain Showers Likely

    • 81
    • 87

    Rain Showers Likely

    • 81
    • 87

    Chance Thunderstorms

Today 26 Sep Monroe Middle Keys

Partly sunny with a chance of Showers and Thunderstorms. Highs in the upper 80s. Chance of rain 30 percent.

Tonight 26 Sep Monroe Middle Keys

Mostly clear. Lows in the mid to upper 70s. North Winds near 5 Mph.

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  • Temperature Real-Time

Vaca Key - Fat Deer Key Bridge Temperature Statistics

September Temperature

The Florida Keys - Marathon International Airport (0.6 miles)

  • Lowest 20 September, 2026

    77.6 °F

  • Average September

    85.4 °F

  • Highest 1 September, 2026

    92.6 °F

Climate (2021–2026)

The Florida Keys - Marathon International Airport (0.6 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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