Lake Poygan Weather Forecast

    • 59
    • 82

    Mostly Sunny

    • 63
    • 85

    Mostly Sunny

    • 62
    • 82

    Partly Sunny

    • 61
    • 78

    Chance Rain Showers

    • 58
    • 70

    Chance Rain Showers

    • 57
    • 68

    Slight Chance Thunderstorms

Today 15 Sep Winnebago

Sunny. Highs in the lower 80s. Southeast wind 5 to 10 Mph.

Tonight 15 Sep Winnebago

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

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Poygan Temperature Statistics

September Temperature

Appleton-Outagamie (14.9 miles)

  • Lowest 4 September, 2025

    42.8 °F

  • Average September

    59.2 °F

  • Highest 1 September, 2025

    78.8 °F

Climate (2020–Present)

Appleton-Outagamie (14.9 miles)

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  • Average Low 2020–2025

    39.5 °F

  • Average 2020–2025

    46.5 °F

  • Average High 2020–2025

    56.3 °F
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