September weather forecast
Marine City, MI

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Weather in September

September, the first month of the autumn in Marine City, is still a pleasant month, with an average temperature fluctuating between 56.3°F (13.5°C) and 70.9°F (21.6°C).

Temperature

Marine City, Michigan, in September undergoes a slight reduction in the average high-temperature, shifting from August's warm 76.8°F (24.9°C) to a pleasant 70.9°F (21.6°C). In Marine City, the September nights cool down to an average low of 56.3°F (13.5°C).

Humidity

The average relative humidity in September is 78%.

Rainfall

In Marine City, during September, the rain falls for 13.2 days and regularly aggregates up to 1.73" (44mm) of precipitation. In Marine City, Michigan, during the entire year, the rain falls for 143.3 days and collects up to 23.03" (585mm) of precipitation.

Snowfall

June through September are months without snowfall in Marine City.

Ocean temperature

In September, the average ocean temperature in Marine City is 69.4°F (20.8°C).
Note: Most people find swimming in 69.4°F (20.8°C) unenjoyable. As the water temperature falls from 69.8°F (21°C) to 59°F (15°C), controlling one's breathing becomes harder.

Daylight

In September, the average length of the day in Marine City is 12h and 29min.
On the first day of September, sunrise is at 6:55 am and sunset at 8:03 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 7:12 pm EDT.

Sunshine

In Marine City, the average sunshine in September is 8.3h.

UV index

In Marine City, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: A typical high UV index of 4 in September suggests the following recommendations:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Opt for tightly woven and loose clothing to enhance protection from the Sun.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are September temperatures in Marine City?

During September, Marine City experiences an average high-temperature of 70.9°F (21.6°C) and a low-temperature of 56.3°F (13.5°C).

What is the average humidity in September in Marine City?

In Marine City, Michigan, the average relative humidity in September is 78%.

How much does it rain in Marine City in September?

In September, the rain falls for 13.2 days. Throughout September, 1.73" (44mm) of precipitation is accumulated.

When it does not snow in Marine City?

In Marine City, snow does not fall in June through September.

Does it snow in Marine City in September?

In Marine City, in September, it doesn't snow. In October, it regularly snows.

What is the ocean temperature in September in Marine City?

In Marine City, the average seawater temperature in September is 69.4°F (20.8°C). For swimming, a surface water temperature of 69.4°F (20.8°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).

How many hours of daylight does Marine City have in September?

In September, the average day length is 12h and 29min.

What time are sunrise and sunset in September in Marine City?

On the first day of September in Marine City, Michigan, sunrise is at 6:55 am and sunset at 8:03 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 7:12 pm EDT.

How many hours of sunshine does Marine City have in September?

In Marine City, the average sunshine duration in September is 8.3h.

What is the UV index intensity in September in Marine City?

In Marine City, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium health risk from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Marine City, MI

Average temperature in September - Marine City, MI
  • Average high temperature in September: 70.9°F

The warmest month (with the highest average high temperature) is July (77.7°F).
The month with the lowest average high temperature is January (28.2°F).

  • Average low temperature in September: 56.3°F

The month with the highest average low temperature is July (62.6°F).
The coldest month (with the lowest average low temperature) is January (19°F).

Average pressure in September
Marine City, MI

Average pressure in September - Marine City, MI
  • Average pressure in September: 30.04"Hg

The months with the highest atmospheric pressure are March and November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in September
Marine City, MI

Average wind speed in September - Marine City, MI
  • Average wind speed in September: 8mph

The windiest month (with the highest average wind speed) is January (10.9mph).
The calmest month (with the lowest average wind speed) is July (6.7mph).

Average humidity in September
Marine City, MI

Average humidity in September - Marine City, MI
  • Average humidity in September: 78%

The months with the highest relative humidity are January and February (85%).
The months with the lowest relative humidity are April, May and October (76%).

Average rainfall in September
Marine City, MI

Average rainfall in September - Marine City, MI
  • Average rainfall in September: 1.73"

The wettest month (with the highest rainfall) is July (2.72").
The driest months (with the least rainfall) are January and December (1.18").

Average rainfall days in September
Marine City, MI

Average rainfall days in September - Marine City, MI
  • Average rainfall days in September: 13.2 days

The month with the highest number of rainy days is May (17.1 days).
The month with the least rainy days is February (5.8 days).

Average snowfall in September
Marine City, MI

Average snowfall in September - Marine City, MI
  • Average snowfall in September: 0"

The month with the highest snowfall is February (4.45").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in September
Marine City, MI

Average snowfall days in September - Marine City, MI
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (11 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average sea temperature in September
Marine City, MI

Average sea temperature in September - Marine City, MI
  • Average sea temperature in September: 69.4°F

The best month for swimming (with the highest average sea temperature) is August (73.7°F).
The coldest month (with the lowest average sea temperature) is February (32.4°F).

Average daylight in September /
Average sunshine in September
Marine City, MI

Average daylight in September / Average sunshine in September - Marine City, 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 6min).

  • Average sunshine in September: 8h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 3h and 12min).

Average sunshine days in September
Marine City, MI

Average sunshine days in September - Marine City, MI
  • Average sunshine days in September: 14.6 days

The month with the most sunshine days is November (16.5 days).
The months with the least sunshine days are May and July (11.7 days).

Average UV index in September
Marine City, MI

Average UV index in September - Marine City, MI
  • Average UV index in September: 4

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).

Average cloud cover in September
Marine City, MI

Average cloud cover in September - Marine City, MI
  • Average cloud cover in September: 33

The month with the most cloud cover is January (Cloud cover 67).
The months with the least cloud cover are July and August (Cloud cover 29).

Average visibility in September
Marine City, MI

Average visibility in September - Marine City, 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).

Marine City, Michigan, USA

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