Cape Sable Weather Forecast

    • 63
    • 76

    Mostly Sunny

    • 66
    • 76

    Mostly Sunny

    • 66
    • 76

    Mostly Sunny

    • 66
    • 77

    Mostly Sunny

    • 67
    • 78

    Mostly Sunny

    • 68
    • 78

    Mostly Sunny

Today 20 Mar Mainland Monroe

Sunny. Highs in the upper 70s. North Winds 10 to 15 Mph with Gusts up to 30 Mph.

Tonight 20 Mar Mainland Monroe

Mostly clear. Lows in the mid 50s. North Winds 10 to 15 Mph.

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  • Temperature Real-Time

Cape Sable Temperature Statistics

March Temperature

The Florida Keys - Marathon International Airport (26.7 miles)

  • Lowest 1 March, 2026

    70.6 °F

  • Average March

    78.3 °F

  • Highest 6 March, 2026

    83.6 °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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