Rib Mountain State Park Weather Forecast

    • 50
    • 61

    Rain Showers Likely

    • 44
    • 66

    Partly Sunny

    • 39
    • 61

    Mostly Cloudy

    • 40
    • 63

    Mostly Sunny

    • 42
    • 66

    Mostly Sunny

    • 44
    • 68

    Partly Sunny

Today 19 Sep Marathon

Cloudy with Showers likely. Nearly steady temperature around 60. East wind 10 to 15 Mph. Chance of rain 70 percent.

Tonight 19 Sep Marathon

Mostly cloudy. A chance of Showers in the evening. Lows around 50. Northeast wind 5 to 10 Mph. Chance of rain 50 percent.

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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

    67.2 °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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