Lake Winnebago Weather Forecast

    • 62
    • 82

    Mostly Sunny

    • 65
    • 82

    Partly Sunny

    • 62
    • 76

    Partly Sunny

    • 62
    • 71

    Mostly Cloudy

    • 63
    • 69

    Chance Rain Showers

    • 62
    • 70

    Chance Rain Showers

Today 16 Sep Calumet

Sunny. Patchy fog in the morning. Highs in the middle 80s. Light and variable wind becoming south 5 to 10 Mph in the afternoon.

Tonight 16 Sep Calumet

Clear. Lows in the upper 50s. South wind around 5 Mph in the evening becoming light and variable.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Winnebago Temperature Statistics

September Temperature

Appleton-Outagamie (13 miles)

  • Lowest 4 September, 2025

    42.8 °F

  • Average September

    59.8 °F

  • Highest 1 September, 2025

    78.8 °F

Climate (2020–Present)

Appleton-Outagamie (13 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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