Casco Weather Forecast

    • 54
    • 76

    Mostly Sunny

    • 62
    • 79

    Increasing Clouds

    • 55
    • 81

    Partly Sunny

    • 52
    • 71

    Chance Rain Showers

    • 60
    • 69

    Rain Showers

    • 53
    • 73

    Mostly Cloudy

    • 54
    • 68

    Chance Rain Showers

Today 10 Sep Kewaunee

Sunny. Temperatures in the lower to mid 70s. Southwest wind 5 to 10 Mph.

Tonight 10 Sep Kewaunee

Clear. Lows in the middle 50s. Southwest wind 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Casco Temperature Statistics

September Temperature

Door County Cherryland Airport (21.1 miles)

  • Lowest 7 September, 2026

    57 °F

  • Average September

    70.4 °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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