Big Eau Pleine Reservoir Weather Forecast

    • 43
    • 59

    Mostly Cloudy

    • 41
    • 64

    Mostly Sunny

    • 43
    • 66

    Mostly Sunny

    • 45
    • 66

    Partly Sunny

    • 46
    • 68

    Partly Sunny

    • 49
    • 67

    Mostly Cloudy

Today 21 Sep Marathon

Cloudy. Highs around 60. East wind 10 to 15 Mph.

Tonight 21 Sep Marathon

Mostly cloudy. Lows in the lower 40s. East wind 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Big Eau Pleine Reservoir Temperature Statistics

September Temperature

Mosinee (6.2 miles)

  • Lowest 14 September, 2026

    41 °F

  • Average September

    62.9 °F

  • Highest 1 September, 2026

    87.8 °F

Climate (2021–2026)

Mosinee (6.2 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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