Cape Sable Weather Forecast

    • 64
    • 76

    Mostly Sunny

    • 66
    • 77

    Mostly Sunny

    • 67
    • 77

    Mostly Sunny

    • 69
    • 79

    Mostly Sunny

    • 69
    • 79

    Mostly Sunny

    • 69
    • 80

    Mostly Sunny

Today 23 Mar Mainland Monroe

Sunny. Highs in the mid 80s. North Winds around 5 Mph, becoming west this afternoon.

Tonight 23 Mar Mainland Monroe

Mostly clear. Lows in the mid 50s. West Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Cape Sable Temperature Statistics

March Temperature

The Florida Keys - Marathon International Airport (26.7 miles)

  • Lowest 18 March, 2026

    61.6 °F

  • Average March

    76.5 °F

  • Highest 16 March, 2026

    84.7 °F

Climate (2021–Present)

The Florida Keys - Marathon International Airport (26.7 miles)

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  • Average Low 2021–2026

    75.3 °F

  • Average 2021–2026

    80 °F

  • Average High 2021–2026

    85.1 °F
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