September weather forecast
Manitowoc, WI

A tree outside of the iconic stone old courthouse in Manitowoc City, Wisconsin
A tree outside of the iconic stone old courthouse in Manitowoc City, Wisconsin

Weather in September

September, the first month of the autumn in Manitowoc, is also an enjoyable month, with an average temperature ranging between max 67.1°F (19.5°C) and min 56.5°F (13.6°C).

Temperature

In September, the average high-temperature marginally drops from a moderately hot 73.9°F (23.3°C) in August to a comfortable 67.1°F (19.5°C). The average low-temperature, in September, is 56.5°F (13.6°C).

Humidity

In September, the average relative humidity in Manitowoc, Wisconsin, is 79%.

Rainfall

In September, in Manitowoc, the rain falls for 9.7 days. Throughout September, 0.94" (24mm) of precipitation is accumulated. In Manitowoc, during the entire year, the rain falls for 108.5 days and collects up to 10.67" (271mm) of precipitation.

Snowfall

In Manitowoc, snow does not fall in June through September.

Ocean temperature

In September, the average ocean temperature is 65.5°F (18.6°C).
Note: Swimming in 65.5°F (18.6°C) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 69.8°F (21°C).

Daylight

In Manitowoc, the average length of the day in September is 12h and 30min.
On the first day of September, sunrise is at 6:14 am and sunset at 7:27 pm. On the last day of the month, sunrise is at 6:47 am and sunset at 6:33 pm CDT.

Sunshine

In Manitowoc, the average sunshine in September is 9.1h.

UV index

In Manitowoc, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.
Note: In September, the average maximum UV index of 4 translate into the following recommendations:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the average humidity in September in Manitowoc?

In Manitowoc, Wisconsin, the average relative humidity in September is 79%.

How much does it rain in Manitowoc in September?

In September, in Manitowoc, Wisconsin, the rain falls for 9.7 days. Throughout September, 0.94" (24mm) of precipitation is accumulated.

When it does not snow in Manitowoc?

June through September are months without snowfall in Manitowoc, Wisconsin.

Does it snow in Manitowoc in September?

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

What is the ocean temperature in September in Manitowoc?

In Manitowoc, Wisconsin, in September, the average water temperature is 65.5°F (18.6°C). Swimming in 65.5°F (18.6°C) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 69.8°F (21°C).

How many hours of daylight does Manitowoc have in September?

In Manitowoc, the average day length in September is 12h and 30min.

When is the sunrise / sunset in September in Manitowoc?

In September, on the first day of the month, sunrise is at 6:14 am and sunset at 7:27 pm. On the last day of the month, in Manitowoc, Wisconsin, sunrise is at 6:47 am and sunset at 6:33 pm CDT.

How long on average sun shines in September in Manitowoc?

In September, the average sunshine duration is 9.1h.

What is the UV index reading in September in Manitowoc?

In September, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium health risk from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Manitowoc, WI

Average temperature in September - Manitowoc, WI
  • Average high temperature in September: 67.1°F

The warmest month (with the highest average high temperature) is July (74.1°F).
The month with the lowest average high temperature is January (25.2°F).

  • Average low temperature in September: 56.5°F

The month with the highest average low temperature is August (63°F).
The coldest month (with the lowest average low temperature) is January (16.2°F).

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Average pressure in September
Manitowoc, WI

Average pressure in September - Manitowoc, WI
  • Average pressure in September: 30.02"Hg

The month with the highest atmospheric pressure is March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed in September
Manitowoc, WI

Average wind speed in September - Manitowoc, WI
  • Average wind speed in September: 10mph

The windiest month (with the highest average wind speed) is January (13mph).
The calmest month (with the lowest average wind speed) is July (8.4mph).

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Average humidity in September
Manitowoc, WI

Average humidity in September - Manitowoc, WI
  • Average humidity in September: 79%

The month with the highest relative humidity is January (86%).
The months with the lowest relative humidity are October and November (77%).

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Average rainfall in September
Manitowoc, WI

Average rainfall in September - Manitowoc, WI
  • Average rainfall in September: 0.94"

The wettest month (with the highest rainfall) is July (1.34").
The driest months (with the least rainfall) are February and November (0.47").

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Average rainfall days in September
Manitowoc, WI

Average rainfall days in September - Manitowoc, WI
  • Average rainfall days in September: 9.7 days

The months with the highest number of rainy days are June and July (12.1 days).
The month with the least rainy days is January (3.9 days).

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Average snowfall in September
Manitowoc, WI

Average snowfall in September - Manitowoc, WI
  • Average snowfall in September: 0"

The month with the highest snowfall is January (1.26").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in September
Manitowoc, WI

Average snowfall days in September - Manitowoc, WI
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (11.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average sea temperature in September
Manitowoc, WI

Average sea temperature in September - Manitowoc, WI
  • Average sea temperature in September: 65.5°F

The best month for swimming (with the highest average sea temperature) is August (69.7°F).
The coldest month (with the lowest average sea temperature) is February (36.6°F).

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Average daylight in September /
Average sunshine in September
Manitowoc, WI

Average daylight in September / Average sunshine in September - Manitowoc, WI
  • Average daylight in September: 12h and 30min

The month with the longest days is June (Average daylight: 15h and 26min).
The month with the shortest days is December (Average daylight: 8h and 57min).

  • Average sunshine in September: 9h and 6min

The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).

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Average sunshine days in September
Manitowoc, WI

Average sunshine days in September - Manitowoc, WI
  • Average sunshine days in September: 17.9 days

The month with the most sunshine days is November (19.1 days).
The month with the least sunshine days is February (14.6 days).

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Average UV index in September
Manitowoc, WI

Average UV index in September - Manitowoc, WI
  • 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, February and December (UV index 1).

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Average cloud cover in September
Manitowoc, WI

Average cloud cover in September - Manitowoc, WI
  • Average cloud cover in September: 30

The month with the most cloud cover is January (Cloud cover 64).
The months with the least cloud cover are July and August (Cloud cover 27).

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Average visibility in September
Manitowoc, WI

Average visibility in September - Manitowoc, WI
  • 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).

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