Saint Clair Shores Weather in September

The climate in Saint Clair Shores during September can be summarized as mild and reasonably dry.

September is in the fall / autumn in Saint Clair Shores and is typically the 4th warmest month of the year. Daytime maximum temperatures average around 23°C (73°F), whilst at night 13°C (55°F) is normal.

On average September is the 4th wettest month of the year in Saint Clair Shores with around 78mm 3.1 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 10 days, although this may vary considerably.

On the flip side this corresponds to an average of 7 hours of sunshine per day.

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Saint Clair Shores in September 2025.