Whitefish Weather in September

The climate in Whitefish during September can be summarized as mild and reasonably dry.

September is in the fall / autumn in Whitefish and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a cool 20°C (67°F), whilst at night 3°C (38°F) is normal.

On average September is the 6th driest month of the year in Whitefish with around 37mm 1.5 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 9 days, although this may vary considerably.

On the flip side this corresponds to an average of 8.1 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 Whitefish in September 2025.