Casco Weather Forecast

    • 68
    • 87

    Chance Thunderstorms

    • 64
    • 80

    Mostly Cloudy

    • 64
    • 77

    Mostly Cloudy

    • 64
    • 78

    Chance Thunderstorms

    • 63
    • 77

    Chance Rain Showers

    • 60
    • 78

    Chance Rain Showers

    • 57
    • 74

    Mostly Cloudy

Today 1 Sep Kewaunee

Very warm and humid. Partly cloudy. Patchy dense fog reducing Visibilities to less than 1/4 mile at Times. Temperatures in the upper 70s at the lakeshore to the upper 80s well inland. South wind 5 to 10 Mph. Heat indices to 101.

Tonight 1 Sep Kewaunee

Muggy. Mostly cloudy. Patchy dense fog reducing Visibilities to less than 1/4 mile at Times. A chance of Showers and Thunderstorms after midnight. Lows in the upper 60s. Southwest wind 5 to 10 Mph in the evening becoming light and variable. Chance of rain 40 percent.

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Casco Temperature Statistics

September Temperature

Door County Cherryland Airport (21.1 miles)

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Climate (2021–2026)

Door County Cherryland Airport (21.1 miles)

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  • Average Low 2021–2026

    39.8 °F

  • Average 2021–2026

    46.9 °F

  • Average High 2021–2026

    53.9 °F
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