Marathon Weather Forecast

    • 61
    • 71

    Mostly Sunny

    • 63
    • 71

    Mostly Sunny

    • 65
    • 72

    Partly Sunny

    • 64
    • 73

    Partly Sunny

    • 65
    • 73

    Mostly Sunny

    • 64
    • 74

    Mostly Sunny

Today 8 Feb Monroe Middle Keys

Mostly sunny. Highs in the upper 60s to near 70. Northeast Winds 10 to 15 Mph, decreasing to near 10 Mph.

Tonight 8 Feb Monroe Middle Keys

Mostly clear. Lows near 60. Northeast to east Winds decreasing to 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Marathon Temperature Statistics

February Temperature

The Florida Keys - Marathon International Airport (2.5 miles)

  • Lowest 1 February, 2026

    44.7 °F

  • Average February

    56.8 °F

  • Highest 4 February, 2026

    72 °F

Climate (2021–Present)

The Florida Keys - Marathon International Airport (2.5 miles)

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  • Average Low 2021–2026

    75.4 °F

  • Average 2021–2026

    80 °F

  • Average High 2021–2026

    85.1 °F
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