Isle of Ferns Park Weather Forecast

    • 52
    • 73

    Chance Rain Showers

    • 50
    • 75

    Partly Sunny

    • 54
    • 65

    Rain Showers

    • 51
    • 66

    Rain Showers Likely

    • 46
    • 66

    Mostly Cloudy

    • 47
    • 65

    Chance Rain Showers

    • 48
    • 67

    Slight Chance Rain Showers

Today 16 Sep Marathon

Partly sunny. Highs around 70.

Tonight 16 Sep Marathon

Mostly cloudy. A chance of Showers and a slight chance of Thunderstorms after midnight. Patchy fog after midnight. Lows in the lower 50s. Light and variable wind. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Isle of Ferns Park Temperature Statistics

September Temperature

Wausau Downtown Airport (1.2 miles)

  • Lowest 14 September, 2026

    39.9 °F

  • Average September

    68.5 °F

  • Highest 1 September, 2026

    89.7 °F

Climate (2021–2026)

Wausau Downtown Airport (1.2 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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