Rib Mountain State Park Weather Forecast

    • 65
    • 85

    Slight Chance Rain Showers

    • 59
    • 81

    Partly Sunny

    • 60
    • 79

    Mostly Cloudy

    • 61
    • 77

    Rain Showers Likely

    • 65
    • 76

    Rain Showers Likely

    • 59
    • 80

    Chance Rain Showers

Today 4 Sep Marathon

Humid. Mostly cloudy. Scattered Showers and Thunderstorms in the morning. Highs in the middle 80s. Southeast wind 5 to 10 Mph shifting to the southwest in the afternoon. Chance of rain 50 percent. Heat indices to 96.

Tonight 4 Sep Marathon

Partly cloudy with a slight chance of Showers in the Evening, then mostly cloudy after midnight. Patchy fog in the Evening, then Areas of fog after midnight. Lows in the middle 60s. Northeast wind 5 to 10 Mph in the evening becoming light and variable. Chance of rain 20 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 1 September, 2026

    63.6 °F

  • Average September

    74.5 °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

    37.3 °F

  • Average 2021–2026

    46.7 °F

  • Average High 2021–2026

    56 °F
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