January weather forecast
Milwaukee, WI

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The modern Milwaukee City and Lake Michigan in Wisconsin, USA
The modern Milwaukee City and Lake Michigan in Wisconsin, USA

Weather in January

The year begins in Milwaukee, Wisconsin, with a distinct chill in the air. January is the coldest month, and also brings the highest chance of snow, with an average of 1.1" (28mm) of snowfall. The daylight hours are the fewest, leading to long, brisk nights. The persistent pressure of 30.09" (764mm) is indicative of the stable conditions usually appreciated by residents. The weather transitions smoothly into February, where slight changes in temperature and precipitation occur.

Temperature

The month of January, characterized by an average high of 26.1°F (-3.3°C) and a low of 15.8°F (-9°C), is recognized as the coldest.

Humidity

The most humid month in Milwaukee is January, with an average relative humidity of 85%.

Rainfall

In Milwaukee, in January, during 1.8 rainfall days, 0.31" (8mm) of precipitation is typically accumulated. Throughout the year, there are 75.6 rainfall days, and 5.83" (148mm) of precipitation is accumulated.

Snowfall

January through April, October through December are months with snowfall. The month with the most snowfall is January, when snow falls for 6.6 days and typically aggregates up to 1.1" (28mm) of snow.

Ocean temperature

In Milwaukee, the average seawater temperature in January is 37.4°F (3°C).
Note: In the realm of swimming, this is an immediate threat to life. Total loss of control over breathing happens instantly, complicating clear thought processes. The necessity of a specialized swimsuit to restrict thermal loss is paramount.

Daylight

The average length of the day in January is 9h and 26min.
On the first day of the month, sunrise is at 7:22 am and sunset at 4:27 pm. On the last day of January, sunrise is at 7:07 am and sunset at 5:02 pm CST.

Sunshine

The month with the least sunshine is January, with an average of 3.5h of sunshine.

UV index

January and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index reading of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: A maximum high daily UV index of 1 during January translates into the following directions:
Sun exposure does not present considerable issues for many, yet infants, fair-skinned people, and children necessitate constant protection. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Consider this! The reflection from snow can almost double the intensity of the Sun's UV radiation.

Frequently asked questions

What month is the coldest?

The month of January, characterized by an average high of 26.1°F (-3.3°C) and a low of 15.8°F (-9°C), is recognized as the coldest.

How cold is January?

During January, Milwaukee experiences an average high-temperature of 26.1°F (-3.3°C) and a low-temperature of 15.8°F (-9°C).

What is the most humid month?

The most humid month is January, with an average relative humidity of 85%.

What is the average humidity in January?

In January, the average relative humidity is 85%.

How much does it rain in January?

In January, the rain falls for 1.8 days. Throughout January, 0.31" (8mm) of precipitation is accumulated.

What is the snowiest month?

January is the month with the most snowfall. Snow falls for 6.6 days and accumulates 1.1" (28mm) of snow.

How much does it snow in Milwaukee in January?

In Milwaukee, in January, snow falls for 6.6 days, with typically accumulated 1.1" (28mm) of snow.

What is the ocean temperature in January?

In Milwaukee, in January, the average water temperature is 37.4°F (3°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.

How many hours of daylight does Milwaukee have in January?

In January, the average day length is 9h and 26min.

What time are sunrise and sunset in January?

On the first day of January, sunrise is at 7:22 am and sunset at 4:27 pm. On the last day of the month, sunrise is at 7:07 am and sunset at 5:02 pm CST.

What is the month with the least sunshine?

With an average of 3.5h of sunshine, January has the least sunshine of the year in Milwaukee.

How many hours of sunshine does Milwaukee have in January?

The average sunshine duration in January is 3.5h.

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 January?

In January, the average daily maximum UV index is 1. A UV Index estimate of 2, and below, represents a low health threat 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 January
Milwaukee, WI

Average temperature in January - Milwaukee, WI
  • Average high temperature in January: 26.1°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 January: 15.8°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 January
Milwaukee, WI

Average pressure in January - Milwaukee, WI
  • Average pressure in January: 30.09"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 January
Milwaukee, WI

Average wind speed in January - Milwaukee, WI
  • Average wind speed in January: 11.4mph

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 January
Milwaukee, WI

Average humidity in January - Milwaukee, WI
  • Average humidity in January: 85%

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

Average rainfall in January
Milwaukee, WI

Average rainfall in January - Milwaukee, WI
  • Average rainfall in January: 0.31"

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 January
Milwaukee, WI

Average rainfall days in January - Milwaukee, WI
  • Average rainfall days in January: 1.8 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 January
Milwaukee, WI

Average snowfall in January - Milwaukee, WI
  • Average snowfall in January: 1.1"

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 January
Milwaukee, WI

Average snowfall days in January - Milwaukee, WI
  • Average snowfall days in January: 6.6 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 January
Milwaukee, WI

Average sea temperature in January - Milwaukee, WI
  • Average sea temperature in January: 37.5°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 January /
Average sunshine in January
Milwaukee, WI

Average daylight in January / Average sunshine in January - Milwaukee, WI
  • Average daylight in January: 9h and 2min

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 January: 3h and 3min

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 January
Milwaukee, WI

Average sunshine days in January - Milwaukee, WI
  • Average sunshine days in January: 25.4 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 January
Milwaukee, WI

Average UV index in January - Milwaukee, WI
  • Average UV index in January: 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 January
Milwaukee, WI

Average cloud cover in January - Milwaukee, WI
  • Average cloud cover in January: 63

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 January
Milwaukee, WI

Average visibility in January - Milwaukee, WI
  • Average visibility in January: 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).

Milwaukee, Wisconsin, USA

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