Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average sea temperature in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
September signals a slight drop in average high-temperature, sliding from August's warm 75.4°F (24.1°C) to a pleasant 69.3°F (20.7°C). In Muskegon, September nights witness a steady temperature drop to a mild 57.9°F (14.4°C).Humidity
In Muskegon, the average relative humidity in September is 77%.Rainfall
In Muskegon, during September, the rain falls for 12.4 days and regularly aggregates up to 1.14" (29mm) of precipitation. Throughout the year, in Muskegon, there are 124.4 rainfall days, and 11.42" (290mm) of precipitation is accumulated.Snowfall
May through September are months without snowfall.Ocean temperature
In Muskegon, in September, the average water temperature is 66.2°F (19°C).Note: For swimming, a surface water temperature of 66.2°F (19°C) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 69.8°F (21°C).
Daylight
In September, the average length of the day is 12h and 29min.On the first day of the month, sunrise is at 7:10 am and sunset at 8:19 pm. On the last day of September, sunrise is at 7:42 am and sunset at 7:27 pm EDT.
Sunshine
The average sunshine in September in Muskegon is 8.3h.UV index
The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for average individuals.Note: The maximum daily UV index, 4 in September, converts into the following recommendations:
Adopt protective measures - It is advised to guard against sun damage. To guard against the harmful effects of the Sun, minimize exposure during midday. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Muskegon in September?
What is the average humidity in September in Muskegon?
How many days does it rain in September in Muskegon?
When it does not snow in Muskegon?
Does it snow in Muskegon in September?
How cold is the water in September in Muskegon?
What is the average length of the day in September in Muskegon?
When is the sunrise / sunset in September in Muskegon?
How long on average sun shines in September in Muskegon?
What is the UV index intensity in September in Muskegon?
Average temperature in September
Muskegon, MI
- Average high temperature in September: 69.3°F
The warmest months (with the highest average high temperature) are July and August (75.4°F).
The month with the lowest average high temperature is January (28.9°F).
- Average low temperature in September: 57.9°F
The month with the highest average low temperature is August (64.2°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).
Average pressure in September
Muskegon, MI
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in September
Muskegon, MI
- Average wind speed in September: 9.7mph
The windiest month (with the highest average wind speed) is November (12.4mph).
The calmest month (with the lowest average wind speed) is July (7.9mph).
Average humidity in September
Muskegon, MI
- Average humidity in September: 77%
The month with the highest relative humidity is January (84%).
The months with the lowest relative humidity are April, October and November (76%).
Average rainfall in September
Muskegon, MI
- Average rainfall in September: 1.14"
The wettest month (with the highest rainfall) is October (1.38").
The driest month (with the least rainfall) is February (0.55").
Average rainfall days in September
Muskegon, MI
- Average rainfall days in September: 12.4 days
The month with the highest number of rainy days is October (14.9 days).
The month with the least rainy days is February (4 days).
Average snowfall in September
Muskegon, MI
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.05").
The months with the least 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 (16.6 days).
The months with the least snowfall days are 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).
The 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: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in September: 8h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is January (Average sunshine: 2h and 18min).
Average sunshine days in September
Muskegon, MI
- Average sunshine days in September: 14.4 days
The month with the most sunshine days is March (17.3 days).
The month with the least sunshine days is January (10.3 days).
Average UV index in September
Muskegon, MI
- Average UV index in September: 4
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
Muskegon, MI
- Average cloud cover in September: 29
The month with the most cloud cover is January (Cloud cover 77).
The month with the least cloud cover is July (Cloud cover 24).
Average visibility in September
Muskegon, MI
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Muskegon, Michigan, USA
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