December weather - Winter 2024

Weather in December
Frequently asked questions
Average temperature in December
Average pressure in December
Average wind speed in December
Average humidity in December
Average rainfall in December
Average rainfall days in December
Average snowfall in December
Average snowfall days in December
Average sea temperature in December
Average daylight in December
Average sunshine in December
Average sunshine days in December
Average UV index in December
Average cloud cover in December
Average visibility in December

The modern Milwaukee City and Lake Michigan in Wisconsin, USA

Weather in December

The arrival of December brings winter back in full swing in Milwaukee, Wisconsin. Residents of the city wrap themselves in winter garbs, preparing for the snowy days ahead. The temperatures drop significantly, generating a wintertime aura throughout the city. The festive season intertwined with the frosty weather creates a unique blend of cheeriness and chill. As the year draws to an end, Milwaukee remains wrapped in winter's folds, bidding adieu until the weather cycle restarts.

Temperature

Transition into December marks a drop in the average high-temperature, moving from a chilly 43.7°F (6.5°C) in November to a wintry 32.2°F (0.1°C). Milwaukee records a mild decrease in temperature during the nights of December, averaging a subzero cold 23.9°F (-4.5°C).

Humidity

The average relative humidity in December is 81%.

Rainfall

The months with the least rainfall are February and December Rain falls for 3.5 days and accumulates 0.28" (7mm) of rain.

Snowfall

January through April, October through December are months with snowfall. In December, it is snowing for 5.8 days. Throughout December, 0.24" (6mm) of snow is accumulated. In Milwaukee, during the entire year, snow falls for 27.6 days and aggregates up to 3.43" (87mm) of snow.

Ocean temperature

In Milwaukee, Wisconsin, the average seawater temperature in December is 40.1°F (4.5°C).
Note: In the activity of swimming, this state poses an instant danger to life. Breathing control is completely lost, impeding any form of clear thinking. Employing a specialized swimsuit is crucial to minimize thermal loss.

Daylight

The month with the shortest days in Milwaukee is December, with an average of 9h and 6min of daylight.
On the first day of December, sunrise is at 7:03 am and sunset at 4:17 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 4:26 pm CST.

Sunshine

In December, the average sunshine is 3.9h.

UV index

January and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: In December, the average maximum UV index of 1 translates into the following recommendations:
While sun exposure does not greatly affect most, individuals with fair skin, babies, and children always need vigilant safeguarding. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.

Updated: Jun 10, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is it in December?

Milwaukee in December has an average high-temperature of 32.2°F (0.1°C) and an average low-temperature of 23.9°F (-4.5°C).

What is the average humidity in December?

In December, the average relative humidity is 81%.

What is the driest month in Milwaukee?

The months with the least rainfall are February and December Rain falls for 3.5 days and accumulates 0.28" (7mm) of rain.

How many days does it rain in December?

In Milwaukee, in December, it is raining for 3.5 days, with typically 0.28" (7mm) of accumulated precipitation.

How much does it snow in December?

In Milwaukee, in December, snow falls for 5.8 days, with typically accumulated 0.24" (6mm) of snow.

What is the ocean temperature in December?

In Milwaukee, in December, the average water temperature is 40.1°F (4.5°C). 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.

What is the month with the shortest days?

December has the shortest days of the year, with an average of 9h and 6min of daylight.

What is the average length of the day in December?

In Milwaukee, the average day length in December is 9h and 4min.

When is the sunrise / sunset in December?

In December, on the first day of the month, sunrise is at 7:03 am and sunset at 4:17 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 4:26 pm CST.

How long on average sun shines in December?

In Milwaukee, the average sunshine duration in December is 3.9h.

When is the lowest UV index?

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

How high is the UV index in December?

In Milwaukee, the average daily maximum UV index in December is 1. A UV Index value of 2, and less, symbolizes a minimal hazard to health from exposure to the Sun's UV radiation.

Today

Tomorrow

Long-term

Year J F M A M J J A S O N December

Nov

December

Jan

Average high temperature

43.7°F 6.5°C

32.2°F 0.1°C

26.1°F -3.3°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

11.4mph 18.3km/h

12mph 19.3km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

2.4

5.8

6.6

Average sea temperature

Average daylight

Average sunshine

Average sunshine days

23.6

24.9

25.4

Average UV index

Average cloud cover

Average visibility

Average temperature in December
Milwaukee, WI

Average high temperature in December: 32.2°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 (26.1°F).

Average low temperature in December: 23.9°F

The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (15.8°F).

Average pressure in December
Milwaukee, WI

Average pressure in December: 30.08"Hg

The months with the highest atmospheric pressure are January, February and March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

Average wind speed in December
Milwaukee, WI

Average wind speed in December: 10.7mph

The windiest month (with the highest average wind speed) is January (11.4mph).
The calmest month (with the lowest average wind speed) is July (7.1mph).

Average humidity in December
Milwaukee, WI

Average humidity in December: 81%

The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is October (75%).

Average rainfall in December
Milwaukee, WI

Average rainfall in December: 0.28"

The wettest month (with the highest rainfall) is July (0.75").
The driest months (with the least rainfall) are February and December (0.28").

Average rainfall days in December
Milwaukee, WI

Average rainfall days in December: 3.5 days

The month with the highest number of rainy days is June (9.9 days).
The months with the least rainy days are January and February (1.8 days).

Average snowfall in December
Milwaukee, WI

Average snowfall in December: 0.24"

The month with the highest snowfall is January (1.1").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in December
Milwaukee, WI

Average snowfall days in December: 5.8 days

The month with the highest number of snowfall days is January (6.6 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average sea temperature in December
Milwaukee, WI

Average sea temperature in December: 40.1°F

The best month for swimming (with the highest average sea temperature) is August (71.9°F).
The coldest month (with the lowest average sea temperature) is February (36°F).

Average daylight in December /
Average sunshine in December
Milwaukee, WI

Average daylight in December: 9h and 1min

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 December: 3h and 5min

The months with the most sunshine are July and August (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).

Average sunshine days in December
Milwaukee, WI

Average sunshine days in December: 24.9 days

The month with the most sunshine days is January (25.4 days).
The month with the least sunshine days is June (17.3 days).

Average UV index in December
Milwaukee, WI

Average UV index in December: 1

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

Average cloud cover in December
Milwaukee, WI

Average cloud cover in December: 60

The month with the most cloud cover is January (Cloud cover 63).
The months with the least cloud cover are July and August (Cloud cover 28).

Average visibility in December
Milwaukee, 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).

December weather forecast
Milwaukee, WI

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