Rib Mountain State Park Weather Forecast

    • 42
    • 63

    Mostly Sunny

    • 43
    • 65

    Mostly Sunny

    • 46
    • 66

    Areas Fog

    • 44
    • 68

    Patchy Fog

    • 48
    • 67

    Mostly Cloudy

    • 51
    • 68

    Mostly Cloudy

Today 22 Sep Marathon

Mostly sunny. Highs in the lower 60s. East wind 10 to 15 Mph.

Tonight 22 Sep Marathon

Clear. Lows around 40. East wind 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Rib Mountain State Park Temperature Statistics

September Temperature

Wausau Downtown Airport (3.1 miles)

  • Lowest 14 September, 2026

    40.6 °F

  • Average September

    65.8 °F

  • Highest 1 September, 2026

    89.7 °F

Climate (2021–2026)

Wausau Downtown Airport (3.1 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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