Marathon City Weather Forecast

    • 60
    • 83

    Partly Sunny

    • 58
    • 83

    Slight Chance Thunderstorms

    • 54
    • 78

    Chance Rain Showers

    • 55
    • 74

    Chance Rain Showers

    • 56
    • 71

    Chance Thunderstorms

    • 57
    • 72

    Chance Rain Showers

Today 16 Sep Marathon

Partly cloudy with a chance of Showers in the Morning, then mostly sunny in the afternoon. Highs in the middle 80s. Light and variable wind becoming south 5 to 10 Mph in the afternoon. Chance of rain 50 percent.

Tonight 16 Sep Marathon

Mostly clear. Lows around 60. Light and variable wind.

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Marathon City Temperature Statistics

September Temperature

Wausau Downtown Airport (9.9 miles)

  • Lowest 8 September, 2025

    39 °F

  • Average September

    59.1 °F

  • Highest 14 September, 2025

    81 °F

Climate (2020–Present)

Wausau Downtown Airport (9.9 miles)

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  • Average Low 2020–2025

    37.5 °F

  • Average 2020–2025

    46.7 °F

  • Average High 2020–2025

    55.9 °F
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