Alpena Weather in September

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

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

September is in the fall / autumn in Alpena and is typically the 4th warmest month of the year. Daytime maximum temperatures average around 20°C (68°F), whilst at night 8°C (47°F) is normal.

Alpena weather averages (imperial / metric)
Daytime temperature 20.1°C 68.1°F
Nightly temperature 8.4°C 47°F
Average temperature 14.2°C 57.6°F
Daily sunshine 6.8 hrs
Avg rainfall 79 mm 3.1 ins
Rainy days 12 days
Sea temperature 16.7°C 62.1°F
Humidity 79%
Windspeed 13kph 8 mph

On average September is the 2nd wettest month of the year in Alpena with around 79mm 3.1 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 12 days, although this may vary considerably.

On the flip side this corresponds to an average of 6.8 hours of sunshine per day.

September temperatures in Alpena

Alpena average temperature in September

September rainfall

Alpena average rain in September

September hourly sunshine

Alpena 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 Alpena in September 2024.