Vaca Key - Fat Deer Key Bridge Weather Forecast

    • 84
    • 90

    Mostly Sunny

    • 83
    • 90

    Partly Sunny

    • 83
    • 90

    Partly Sunny

    • 83
    • 89

    Mostly Sunny

    • 83
    • 89

    Mostly Sunny

    • 84
    • 89

    Slight Chance Thunderstorms

    • 83
    • 89

    Mostly Sunny

Today 18 Aug Monroe Middle Keys

Sunny. Highs in the lower 90s. West to northwest Winds 5 to 10 Mph, with occasional Gusts up to 20 Mph this Afternoon, mainly across the upper Keys.

Tonight 18 Aug Monroe Middle Keys

Partly cloudy. Lows in the lower 80s. Northwest Winds near 10 Mph. In the upper Keys, Winds near 15 Mph Early, decreasing to near 10 Mph.

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Vaca Key - Fat Deer Key Bridge Temperature Statistics

August Temperature

The Florida Keys - Marathon International Airport (0.6 miles)

  • Lowest 12 August, 2026

    77 °F

  • Average August

    86.2 °F

  • Highest 1 August, 2026

    91.7 °F

Climate (2021–2026)

The Florida Keys - Marathon International Airport (0.6 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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