Lake Wausau Weather Forecast

    • 53
    • 73

    Gradual Clearing

    • 52
    • 64

    Rain Showers

    • 51
    • 63

    Rain Showers Likely

    • 46
    • 67

    Mostly Cloudy

    • 43
    • 62

    Mostly Cloudy

    • 44
    • 63

    Partly Sunny

    • 47
    • 67

    Partly Sunny

Today 17 Sep Marathon

Partly cloudy. Temperatures near 70. Light and variable wind.

Tonight 17 Sep Marathon

Partly cloudy. Lows in the lower 50s. Light and variable wind.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Wausau Temperature Statistics

September Temperature

Wausau Downtown Airport (0.6 miles)

  • Lowest 14 September, 2026

    39.9 °F

  • Average September

    68.1 °F

  • Highest 1 September, 2026

    89.7 °F

Climate (2021–2026)

Wausau Downtown Airport (0.6 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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