December 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 December

December, the first month of the winter in Manitowoc, is still a freezing cold month, with an average temperature ranging between min 23.5°F (-4.7°C) and max 31.1°F (-0.5°C).

Temperature

In December, the average high-temperature drops from a cold 41.9°F (5.5°C) in November to a freezing cold 31.1°F (-0.5°C). The average low-temperature, in Manitowoc, is 23.5°F (-4.7°C).

Humidity

In Manitowoc, the average relative humidity in December is 83%.

Rainfall

In Manitowoc, it is raining for 5.1 days, with typically 0.51" (13mm) of accumulated precipitation. Throughout the year, in Manitowoc, there are 108.5 rainfall days, and 10.67" (271mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Manitowoc, Wisconsin, are January through May, October through December. In Manitowoc, Wisconsin, in December, snow falls for 9.1 days, with typically accumulated 0.71" (18mm) of snow. Throughout the year, there are 43 snowfall days, and 4.72" (120mm) of snow is accumulated.

Ocean temperature

In Manitowoc, Wisconsin, the average seawater temperature in December is 40.6°F (4.8°C).
Note: For swimming, this is considered life-threatening and very dangerous. The water feels painfully cold, and hyperventilation quickly occurs. A specialized swimsuit is mandatory to reduce thermal damage.

Daylight

With an average of 8h and 57min of daylight, December has the shortest days of the year in Manitowoc.
On the first day of the month, sunrise is at 7:05 am and sunset at 4:13 pm. On the last day of December, in Manitowoc, sunrise is at 7:25 am and sunset at 4:21 pm CST.

Sunshine

In Manitowoc, the average sunshine in December is 3.8h.

UV index

The months with the lowest UV index are January, February and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for the average person.
Note: In December, the average maximum UV index of 1 translate into the following recommendations:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the average humidity in December in Manitowoc?

In Manitowoc, Wisconsin, the average relative humidity in December is 83%.

How much does it rain in Manitowoc in December?

In Manitowoc, Wisconsin, during December, the rain falls for 5.1 days and regularly aggregates up to 0.51" (13mm) of precipitation.

How many days does it snow in December in Manitowoc?

In Manitowoc, during December, snow falls for 9.1 days and regularly aggregates up to 0.71" (18mm) of snow.

What is the water temperature in December in Manitowoc?

In Manitowoc, the average seawater temperature in December is 40.6°F (4.8°C). For swimming, this is considered very dangerous and immediately life-threatening. Total loss of breathing control instantly occurs, and clear thinking becomes almost impossible. A specialized swimsuit is obligatory to minimize thermal loss.

What is the month with the shortest days in Manitowoc?

With an average of 8h and 57min of daylight, December has the shortest days of the year.

How many hours of daylight does Manitowoc have in December?

In December, the average day length in Manitowoc, Wisconsin, is 8h and 57min.

When are sunrise and sunset in December in Manitowoc?

In December, on the first day of the month, sunrise is at 7:05 am and sunset at 4:13 pm. On the last day of the month, in Manitowoc, sunrise is at 7:25 am and sunset at 4:21 pm CST.

How many hours of sunshine does Manitowoc have in December?

The average sunshine duration in December in Manitowoc is 3.8h.

What are the months with the lowest UV index in Manitowoc?

The months with the lowest UV index are January, February and December, with an average maximum UV index of 1.

How high is the UV index in December in Manitowoc?

The average daily maximum UV index in December is 1. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Manitowoc, WI

Average temperature in December - Manitowoc, WI
  • Average high temperature in December: 31.1°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 December: 23.5°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 December
Manitowoc, WI

Average pressure in December - Manitowoc, WI
  • Average pressure in December: 30.07"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 December
Manitowoc, WI

Average wind speed in December - Manitowoc, WI
  • Average wind speed in December: 12.6mph

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 December
Manitowoc, WI

Average humidity in December - Manitowoc, WI
  • Average humidity in December: 83%

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 December
Manitowoc, WI

Average rainfall in December - Manitowoc, WI
  • Average rainfall in December: 0.51"

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 December
Manitowoc, WI

Average rainfall days in December - Manitowoc, WI
  • Average rainfall days in December: 5.1 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 December
Manitowoc, WI

Average snowfall in December - Manitowoc, WI
  • Average snowfall in December: 0.71"

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 December
Manitowoc, WI

Average snowfall days in December - Manitowoc, WI
  • Average snowfall days in December: 9.1 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 December
Manitowoc, WI

Average sea temperature in December - Manitowoc, WI
  • Average sea temperature in December: 40.6°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 December /
Average sunshine in December
Manitowoc, WI

Average daylight in December / Average sunshine in December - Manitowoc, WI
  • Average daylight in December: 8h and 57min

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 December: 3h and 48min

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 December
Manitowoc, WI

Average sunshine days in December - Manitowoc, WI
  • Average sunshine days in December: 18.5 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 December
Manitowoc, WI

Average UV index in December - Manitowoc, WI
  • Average UV index in December: 1

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 December
Manitowoc, WI

Average cloud cover in December - Manitowoc, WI
  • Average cloud cover in December: 61

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 December
Manitowoc, WI

Average visibility in December - Manitowoc, WI
  • Average visibility in December: 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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