Lake Wausau Weather Forecast

    • 62
    • 79

    Chance Thunderstorms

    • 50
    • 77

    Partly Sunny

    • 47
    • 66

    Chance Rain Showers

    • 56
    • 69

    Rain Showers

    • 48
    • 69

    Mostly Cloudy

    • 49
    • 69

    Slight Chance Rain Showers

    • 48
    • 72

    Partly Sunny

Today 11 Sep Marathon

Partly cloudy. Nearly steady temperature in the upper 70s. South wind 10 to 15 Mph.

Tonight 11 Sep Marathon

Warmer. Partly cloudy in the Evening, then mostly cloudy with a chance of Showers and Thunderstorms after midnight. Lows in the lower 60s. South wind 10 to 15 Mph. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Wausau Temperature Statistics

September Temperature

Wausau Downtown Airport (0.6 miles)

  • Lowest 7 September, 2026

    56.6 °F

  • Average September

    72.3 °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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