December weather forecast
Manitowoc, WI

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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 in Manitowoc sees a return to the cold winter. The month brings with it greater snowfall than November, averaging 0.71" (18mm). The temperatures continue their downward journey, painting the city white with frost and snow. Giving less daylight hours than any other month, December casts a long shadow over the city. Manitowoc in December wraps up the year with the serene yet harsh beauty of winter.

Temperature

In December, the meteorological conditions alter, with the average high-temperature shifting from a wintry 41.9°F (5.5°C) in November to a subzero cold 31.1°F (-0.5°C). Manitowoc notes an average temperature descent to a still freezing cold 23.5°F (-4.7°C) in December, a small shift from its daytime peak.

Humidity

In December, the average relative humidity is 83%.

Rainfall

In Manitowoc, during December, the rain falls for 5.1 days and regularly aggregates up to 0.51" (13mm) of precipitation. Throughout the year, there are 108.5 rainfall days, and 10.67" (271mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall. In Manitowoc, during December, snow falls for 9.1 days and regularly aggregates up to 0.71" (18mm) of snow. In Manitowoc, during the entire year, snow falls for 43 days and aggregates up to 4.72" (120mm) of snow.

Ocean temperature

In December, the average ocean temperature in Manitowoc, Wisconsin, is 40.6°F (4.8°C).
Note: During swimming activities, this situation is lethal and fraught with danger. The frigid water triggers acute discomfort and swift hyperventilation. A specialized swimsuit is necessary to reduce thermal harm.

Daylight

The month with the shortest days is December, with an average of 8h and 54min of daylight.
On the first day of the month, sunrise is at 7:06 am and sunset at 4:13 pm. On the last day of December, in Manitowoc, sunrise is at 7:25 am and sunset at 4:22 pm CST.

Sunshine

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

UV index

January, February and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for the average person.
Note: The maximum daily UV index of 1 in December interprets into the following recommendations:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
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Frequently asked questions

How cold is it in Manitowoc in December?

The high-temperature, in December, in Manitowoc, records 31.1°F (-0.5°C), while the low-temperature is 23.5°F (-4.7°C).

What is the average humidity in December in Manitowoc?

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

How much does it rain in Manitowoc in December?

In December, the rain falls for 5.1 days. Throughout December, 0.51" (13mm) of precipitation is accumulated.

How much does it snow in Manitowoc in December?

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

How cold is the water 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?

The month with the shortest days in Manitowoc is December, with an average of 8h and 54min of daylight.

What is the average length of the day in December in Manitowoc?

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

What time are sunrise and sunset in December in Manitowoc?

In December, on the first day of the month, sunrise is at 7:06 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 4:22 pm CST.

How long on average sun shines in December in Manitowoc?

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

What is the month with the lowest UV index in Manitowoc?

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

What is the UV index reading in December in Manitowoc?

The average daily maximum UV index in December in Manitowoc is 1. A UV Index reading of 2, and below, represents a minimal hazard to health from exposure to the Sun's UV radiation.
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 5min

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 8h and 54min).

  • Average sunshine in December: 3h and 5min

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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Manitowoc, Wisconsin, USA

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