Marathon City Weather Forecast

    • 46
    • 69

    Mostly Cloudy

    • 53
    • 67

    Decreasing Clouds

    • 51
    • 74

    Partly Sunny

    • 57
    • 71

    Rain Showers Likely

    • 54
    • 71

    Chance Rain Showers

    • 46
    • 70

    Slight Chance Rain Showers

    • 44
    • 65

    Slight Chance Rain Showers

Today 26 Sep Marathon

Partly cloudy. Highs in the middle 60s.

Tonight 26 Sep Marathon

Partly cloudy in the evening then becoming mostly cloudy. Lows in the middle 40s. Southeast wind 5 to 10 Mph in the evening becoming light and variable.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Marathon City Temperature Statistics

September Temperature

Wausau Downtown Airport (9.9 miles)

  • Lowest 14 September, 2026

    40.6 °F

  • Average September

    64.2 °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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