Casco Weather Forecast

    • 54
    • 62

    Chance Rain Showers

    • 48
    • 65

    Mostly Cloudy

    • 44
    • 60

    Mostly Cloudy

    • 48
    • 62

    Partly Sunny

    • 49
    • 63

    Partly Sunny

    • 50
    • 65

    Mostly Cloudy

    • 50
    • 69

    Partly Sunny

Today 19 Sep Kewaunee

Mostly clear. Lows in the lower 50s. Highs in the upper 60s.

Tonight 19 Sep Kewaunee

Cloudy. Showers in the Evening, then a slight chance of Showers after midnight. Nearly steady temperature in the upper 50s. Northeast wind 10 to 15 Mph. Chance of rain 80 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Casco Temperature Statistics

September Temperature

Door County Cherryland Airport (21.1 miles)

  • Lowest 14 September, 2026

    45 °F

  • Average September

    67.5 °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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