Casco Weather Forecast

    • 50
    • 63

    Mostly Sunny

    • 49
    • 63

    Partly Sunny

    • 47
    • 66

    Partly Sunny

    • 48
    • 66

    Mostly Cloudy

    • 50
    • 66

    Mostly Cloudy

    • 54
    • 70

    Mostly Cloudy

Today 23 Sep Kewaunee

Sunny. Highs in the lower 60s. East wind 10 to 15 Mph.

Tonight 23 Sep Kewaunee

Mostly clear. Lows in the lower 50s. East wind 5 to 10 Mph.

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Casco Temperature Statistics

September Temperature

Door County Cherryland Airport (21.1 miles)

  • Lowest 14 September, 2026

    45 °F

  • Average September

    66.2 °F

  • Highest 1 September, 2026

    86 °F

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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