Marathon Weather Forecast

    • 81
    • 91

    Slight Chance Thunderstorms

    • 81
    • 90

    Chance Rain Showers

    • 81
    • 90

    Chance Rain Showers

    • 82
    • 90

    Chance Rain Showers

    • 82
    • 90

    Chance Rain Showers

    • 82
    • 90

    Chance Rain Showers

Today 21 Aug Monroe Middle Keys

Partly cloudy. A slight chance of Showers and Thunderstorms. Lows near 80. East Winds decreasing to 5 to 10 Mph. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Marathon Temperature Statistics

August Temperature

Marathon, Marathon Airport (2.5 miles)

  • Lowest 11 August, 2018

    73.9 °F
  • Average August

    84.2 °F
  • Highest 11 August, 2018

    91.9 °F

Climate (2010–Present)

Marathon, Marathon Airport (2.5 miles)

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  • Average Low 2010–Present

    74.8 °F
  • Average 2010–Present

    79.3 °F
  • Average High 2010–Present

    84.4 °F
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