Marathon City Weather Forecast

    • 61
    • 78

    Rain Showers

    • 39
    • 61

    Chance Rain Showers

    • 36
    • 60

    Partly Sunny

    • 40
    • 61

    Mostly Cloudy

    • 44
    • 62

    Slight Chance Rain Showers

    • 48
    • 67

    Slight Chance Thunderstorms

    • 52
    • 75

    Slight Chance Thunderstorms

Today 18 May Marathon

Mostly cloudy with a slight chance of Showers and Thunderstorms. Temperatures in the mid to upper 70s. Southwest wind 10 to 15 Mph.

Tonight 18 May Marathon

A chance of Showers and Thunderstorms in the Evening, then Showers and a chance of Thunderstorms after midnight. Patchy fog. Lows in the upper 50s. Temperatures rising into the mid 60s after midnight. Southwest wind 5 to 10 Mph. Chance of rain near 100 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Marathon City Temperature Statistics

May Temperature

Wausau Downtown Airport (9.9 miles)

  • Lowest 2 May, 2026

    26.7 °F

  • Average May

    50.5 °F

  • Highest 15 May, 2026

    81.6 °F

Climate (2021–Present)

Wausau Downtown Airport (9.9 miles)

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  • Average Low 2021–2026

    37.4 °F

  • Average 2021–2026

    46.7 °F

  • Average High 2021–2026

    56 °F
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