Pontiac Weather in September

What's the weather like in Pontiac (Michigan) in September 2024?

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

September is in the fall / autumn in Pontiac and is typically the 4th warmest month of the year. Daytime maximum temperatures average around 23°C (73°F), whilst at night 12°C (54°F) is normal.

Pontiac weather averages (imperial / metric)
Daytime temperature 22.7°C 72.8°F
Nightly temperature 12.2°C 53.9°F
Average temperature 17.4°C 63.3°F
Daily sunshine 7.4 hrs
Avg rainfall 72 mm 2.8 ins
Rainy days 10 days
Sea temperature 20°C 67.9°F
Humidity 75%
Windspeed 14kph 9 mph

On average September is the 5th wettest month of the year in Pontiac with around 72mm 2.8 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 7.4 hours of sunshine per day.

September temperatures in Pontiac

Pontiac average temperature in September

September rainfall

Pontiac average rain in September

September hourly sunshine

Pontiac average rain in September

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 Pontiac in September 2024.