Marathon Weather Forecast

    • 64
    • 77

    Partly Sunny

    • 62
    • 76

    Mostly Sunny

    • 65
    • 76

    Mostly Sunny

    • 69
    • 77

    Mostly Sunny

    • 68
    • 79

    Chance Rain Showers

    • 65
    • 79

    Chance Rain Showers

Today 11 Feb Monroe Middle Keys

Mostly sunny. Highs in the mid 70s. East Winds 5 to 10 Mph.

Tonight 11 Feb Monroe Middle Keys

Mostly clear. Lows in the lower to mid 60s. East Winds near 5 Mph, becoming light and variable.

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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

    59.2 °F

  • Highest 4 February, 2026

    72.6 °F

Climate (2021–Present)

The Florida Keys - Marathon International Airport (2.5 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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