Marathon Weather Forecast

    • 81
    • 90

    Rain Showers Likely

    • 81
    • 89

    Rain Showers Likely

    • 80
    • 89

    Chance Thunderstorms

    • 79
    • 88

    Chance Rain Showers

    • 79
    • 86

    Chance Rain Showers

    • 80
    • 88

    Chance Rain Showers

    • 80
    • 89

    Chance Rain Showers

Today 3 Oct Monroe Middle Keys

Partly cloudy with a chance of Showers and a slight chance of Thunderstorms. Highs in the upper 80s. East to southeast Winds 5 to 10 Mph. Chance of rain 30 percent.

Tonight 3 Oct Monroe Middle Keys

Mostly cloudy with a chance of Showers and a slight chance of Thunderstorms. Lows in the lower 80s. East to southeast Winds near 10 Mph. Chance of rain 50 percent.

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Marathon Temperature Statistics

October Temperature

The Florida Keys - Marathon International Airport (2.5 miles)

  • Lowest

  • Average October

  • Highest

Climate (2019–Present)

The Florida Keys - Marathon International Airport (2.5 miles)

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  • Average Low 2019–2024

    75.4 °F
  • Average 2019–2024

    80.1 °F
  • Average High 2019–2024

    85.4 °F
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