Lake Wausau Weather Forecast

    • 59
    • 74

    Chance Rain Showers

    • 42
    • 68

    Chance Rain Showers

    • 38
    • 64

    Mostly Sunny

    • 44
    • 63

    Partly Sunny

    • 34
    • 62

    Mostly Sunny

    • 37
    • 60

    Mostly Sunny

Today 30 Sep Marathon

Humid. Mostly cloudy. Areas of fog in the morning. Highs in the lower 70s. Southwest wind 5 to 10 Mph.

Tonight 30 Sep Marathon

Cloudy. Patchy fog. Lows in the upper 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

    40.6 °F

  • Average September

    63.7 °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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