Mountain Lake Weather Forecast

    • 50
    • 78

    Becoming Sunny

    • 43
    • 66

    Partly Sunny

    • 56
    • 67

    Rain Showers

    • 51
    • 72

    Mostly Cloudy

    • 53
    • 67

    Chance Rain Showers

    • 51
    • 70

    Slight Chance Thunderstorms

Today 12 Sep Waupaca

Partly cloudy. A chance of Showers in the morning. Highs in the upper 70s. West wind 10 to 15 Mph. Chance of rain 30 percent.

Tonight 12 Sep Waupaca

Cooler. Clear in the evening then becoming partly cloudy. Lows around 50. Northwest wind 5 to 10 Mph in the evening becoming light and variable.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Mountain Lake Temperature Statistics

September Temperature

Waupaca Municipal Airport (8.7 miles)

  • Lowest 10 September, 2026

    50.4 °F

  • Average September

    68.5 °F

  • Highest 1 September, 2026

    89.8 °F

Climate (2021–2026)

Waupaca Municipal Airport (8.7 miles)

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  • Average Low 2021–2026

    39 °F

  • Average 2021–2026

    48.8 °F

  • Average High 2021–2026

    58.6 °F
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