Big Bass Lake Weather Forecast

    • 55
    • 82

    Mostly Sunny

    • 59
    • 84

    Partly Sunny

    • 59
    • 84

    Slight Chance Thunderstorms

    • 55
    • 78

    Slight Chance Thunderstorms

    • 54
    • 73

    Slight Chance Thunderstorms

    • 56
    • 70

    Chance Rain Showers

    • 55
    • 71

    Slight Chance Rain Showers

Today 15 Sep Marathon

Sunny. Temperatures in the lower 80s. South wind 10 to 15 Mph.

Tonight 15 Sep Marathon

Partly cloudy. Lows in the upper 50s. Southeast wind 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Big Bass Lake Temperature Statistics

September Temperature

Mosinee (11.8 miles)

  • Lowest 4 September, 2025

    37.4 °F

  • Average September

    55.6 °F

  • Highest 13 September, 2025

    78.8 °F

Climate (2020–Present)

Mosinee (11.8 miles)

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  • Average Low 2020–2025

    35.7 °F

  • Average 2020–2025

    43 °F

  • Average High 2020–2025

    53.3 °F
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