December weather forecastMilwaukee, WI

The modern Milwaukee City and Lake Michigan in Wisconsin, USA

December

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

Observing a mild shift, the average high-temperature during December reduces from November's frosty 43.7°F (6.5°C) to a wintry 32.2°F (0.1°C). Milwaukee, during December nights, records a temperature marginally cooler than the daytime average, at a freezing cold 23.9°F (-4.5°C).

Humidity

In December, the average relative humidity 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 Milwaukee, in December, during 5.8 snowfall days, 0.24" (6mm) of snow is typically accumulated. Throughout the year, there are 27.6 snowfall days, and 3.43" (87mm) of snow is accumulated.

Ocean temperature

In Milwaukee, the average seawater temperature in December is 40.1°F (4.5°C).
Note: While swimming, this scenario rapidly escalates into a life-threatening situation. Breathing becomes unmanageable, impairing clear thinking. Utilizing a specialized swimsuit is vital to minimize thermal depletion.

Daylight

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

Sunshine

The average sunshine in December 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 low threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: A maximum high daily UV index of 1 during December translates into the following directions:
Protection from prolonged sun exposure is necessary for babies, children, and individuals with sensitive skin. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.

Updated: Aug 1, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

In Milwaukee, in December, the average high-temperature is 32.2°F (0.1°C), and the average low-temperature is 23.9°F (-4.5°C).

In December, the average relative humidity is 81%.

February and December are months with the least rain when the rain falls for 3.5 days and typically aggregates up to 0.28" (7mm) of rain.

In Milwaukee, in December, during 3.5 rainfall days, 0.28" (7mm) of precipitation is typically accumulated.

In December, it is snowing for 5.8 days. Throughout December, 0.24" (6mm) of snow is accumulated.

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

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

The average day length in December is 9h and 4min.

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.

The average sunshine duration in December in Milwaukee is 3.9h.

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

The average daily maximum UV index in December is 1. A UV Index 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

32.2°F

26.1°F

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

11.4mph

12mph

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 6min

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 54min

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).