Big Bass Lake Weather Forecast

    • 59
    • 72

    Mostly Cloudy

    • 42
    • 68

    Slight Chance Rain Showers

    • 38
    • 63

    Mostly Sunny

    • 43
    • 62

    Partly Sunny

    • 34
    • 61

    Mostly Sunny

    • 38
    • 59

    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

Big Bass Lake Temperature Statistics

September Temperature

Mosinee (11.8 miles)

  • Lowest 14 September, 2026

    41 °F

  • Average September

    59.9 °F

  • Highest 1 September, 2026

    87.8 °F

Climate (2021–2026)

Mosinee (11.8 miles)

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  • Average Low 2021–2026

    35.9 °F

  • Average 2021–2026

    43.2 °F

  • Average High 2021–2026

    53.6 °F
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