In September, the weather in Walled Lake is typically warm. Average daily high temperature in September is about 21 degrees above zero. On average, Walled Lake has 15 sunny, 10 partly cloudy, and 5 rainy days in September. The rains are usually moderate. September as well as {{month_nom: February}}, and {{month_nom: February}} is considered the most comfortable time to visit Walled Lake.