Marathon City Weather Forecast

    • 64
    • 74

    Rain Showers

    • 49
    • 77

    Mostly Sunny

    • 50
    • 74

    Sunny

    • 59
    • 78

    Rain Showers Likely

    • 48
    • 74

    Partly Sunny

    • 49
    • 69

    Chance Rain Showers

Today 8 Sep Marathon

Humid. Showers and a chance of Thunderstorms in the Morning, then a chance of Showers and Thunderstorms in the afternoon. Highs in the lower 70s. South wind 10 to 15 Mph. Chance of rain near 100 percent.

Tonight 8 Sep Marathon

Mostly cloudy with a chance of Showers and a slight chance of Thunderstorms. Lows in the lower 60s. Southwest wind 5 to 10 Mph. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Marathon City Temperature Statistics

September Temperature

Wausau Downtown Airport (9.9 miles)

  • Lowest 6 September, 2026

    57.9 °F

  • Average September

    73.5 °F

  • Highest 1 September, 2026

    89.7 °F

Climate (2021–2026)

Wausau Downtown Airport (9.9 miles)

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  • Average Low 2021–2026

    37.4 °F

  • Average 2021–2026

    46.8 °F

  • Average High 2021–2026

    56 °F
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