Green Bay Weather Forecast

    • 59
    • 81

    Mostly Sunny

    • 57
    • 82

    Mostly Sunny

    • 60
    • 83

    Mostly Sunny

    • 59
    • 82

    Partly Sunny

    • 58
    • 80

    Chance Rain Showers

    • 55
    • 72

    Chance Rain Showers

    • 54
    • 70

    Slight Chance Thunderstorms

Today 14 Sep Winnebago

Sunny. Temperatures near 80. East wind 5 to 10 Mph.

Tonight 14 Sep Winnebago

Clear. Lows around 60. Light and variable wind.

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Green Bay Temperature Statistics

September Temperature

Wittman Regional Airport (11.2 miles)

  • Lowest 4 September, 2025

    42.1 °F

  • Average September

    59.3 °F

  • Highest 12 September, 2025

    78.1 °F

Climate (2020–Present)

Wittman Regional Airport (11.2 miles)

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  • Average Low 2020–2025

    39.8 °F

  • Average 2020–2025

    48.6 °F

  • Average High 2020–2025

    57.2 °F
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