Casco Weather Forecast
- 58
- 82
Mostly Sunny
- 59
- 83
Slight Chance Thunderstorms
- 56
- 74
Slight Chance Thunderstorms
- 54
- 70
Chance Rain Showers
- 56
- 69
Chance Rain Showers
- 56
- 71
Chance Rain Showers
Today 16 Sep Kewaunee
Sunny. Patchy fog in the morning. Highs in the lower 80s. South wind 5 to 10 Mph.
Tonight 16 Sep Kewaunee
Mostly clear. Lows in the upper 50s. South wind 5 to 10 Mph in the evening becoming light and variable.
Casco Temperature Statistics
September Temperature
Door County Cherryland Airport (21.1 miles)
Lowest 4 September, 2025
44.1 °FAverage September
59.8 °FHighest 2 September, 2025
77 °F
Climate (2020–Present)
Door County Cherryland Airport (21.1 miles)
Average Low 2020–2025
39.8 °FAverage 2020–2025
46.9 °FAverage High 2020–2025
53.9 °F