Marathon City Weather Forecast

    • 49
    • 77

    Chance Thunderstorms

    • 50
    • 77

    Mostly Sunny

    • 57
    • 80

    Rain Showers Likely

    • 54
    • 80

    Chance Thunderstorms

    • 50
    • 78

    Mostly Sunny

    • 52
    • 77

    Partly Sunny

Today 18 Aug Marathon

Mostly cloudy with a chance of Showers and Thunderstorms. Highs in the upper 70s. West wind 5 to 10 Mph. Chance of rain 40 percent.

Tonight 18 Aug Marathon

Partly cloudy. A slight chance of Showers and Thunderstorms in the evening. Lows around 50. Northwest wind 5 to 10 Mph in the evening becoming light and variable. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Marathon City Temperature Statistics

August Temperature

Wausau Downtown Airport (9.9 miles)

  • Lowest 6 August, 2026

    53.7 °F

  • Average August

    71.9 °F

  • Highest 1 August, 2026

    87.7 °F

Climate (2021–2026)

Wausau Downtown Airport (9.9 miles)

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  • Average Low 2021–2026

    37.3 °F

  • Average 2021–2026

    46.7 °F

  • Average High 2021–2026

    55.9 °F
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