September weather forecast and climate
Muskegon, MI

What is the temperature in September in Muskegon?

In Muskegon, in September, the average high-temperature is 71.2°F (21.8°C), and the average low-temperature is 51.8°F (11°C).

How much does it rain in Muskegon in September?

In Muskegon, during September, the rain falls for 10.1 days and regularly aggregates up to 3.9" (98.8mm) of precipitation.

What is the wettest month in Muskegon?

September is the month with the most rainfall. Rain falls for 10.1 days and accumulates 3.9" (98.8mm) of precipitation.

Does it snow in Muskegon in September?

In Muskegon, in September, it doesn't snow. In October, it regularly snows.
Average temperature in September - Muskegon, MI
  • Average high temperature in September: 71.3°F

The warmest month (with the highest average high temperature) is July (80.4°F).
The month with the lowest average high temperature is January (30.8°F).

  • Average low temperature in September: 51.8°F

The month with the highest average low temperature is July (60.9°F).
The coldest month (with the lowest average low temperature) is January (19.1°F).

Average rainfall in September - Muskegon, MI
  • Average rainfall in September: 3.9"

The wettest month (with the highest rainfall) is September (3.9").
The driest month (with the lowest rainfall) is February (1.8").

Average rainfall days in September - Muskegon, MI
  • Average rainfall days in September: 10.1 days

Months with the highest number of rainy days are January and December (15.7 days).
Months with the lowest number of rainy days are June and August (9 days).

Average snowfall in September - Muskegon, MI
  • Average snowfall in September: 0"

The month with the highest snowfall is January (29.7").
Months with the lowest snowfall are May, June, July, August and September (0").

Average snowfall days in September - Muskegon, MI
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (15.3 days).
Months with the lowest number of snowfall days are May, June, July, August and September (0 days).

Average sea temperature in September - Muskegon, MI
  • Average sea temperature in September: 66°F

The best month for swimming (with the highest average sea temperature) is August (70°F).
Coldest months (with the lowest average sea temperature) are February, March and April (37°F).

Average daylight in September / Average sunshine in September - Muskegon, MI
  • Average daylight in September: 12.5h

The month with the longest days is June (Average daylight: 15.3h).
The month with shortest days is December (Average daylight: 9h).

  • Average sunshine in September: 7h

Months with most sunshine are June and July (Average sunshine: 10h).
Months with least sunshine are November and December (Average sunshine: 3).

Average UV index in September - Muskegon, MI
  • Average UV index in September: 6

Months with the highest UV index are June, July and August (UV index 8).
Months with the lowest UV index are January and December (UV index 1).

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