Marathon City Weather Forecast

    • 55
    • 76

    Rain Showers

    • 39
    • 63

    Chance Rain Showers

    • 37
    • 60

    Partly Sunny

    • 41
    • 63

    Partly Sunny

    • 46
    • 67

    Slight Chance Rain Showers

    • 50
    • 71

    Slight Chance Thunderstorms

Today 18 May Marathon

Warmer. Patchy fog in the morning. Showers likely and a slight chance of Thunderstorms. Highs around 80. Southwest wind 10 to 15 Mph. Chance of rain 70 percent.

Tonight 18 May Marathon

Showers likely and a chance of Thunderstorms. Areas of fog. Lows in the upper 40s. Southeast wind 10 to 15 Mph. Chance of rain 70 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

    49.2 °F

  • Highest 15 May, 2026

    81 °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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