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

January tends to be the coldest month in Milwaukee, with temperatures averaging a daily high of 26.1°F (-3.3°C) and a low of 15.8°F (-9°C).

Humidity

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

Rainfall

In January, the rain falls for 1.8 days. Throughout January, 0.31" (8mm) of precipitation is accumulated. Throughout the year, in Milwaukee, Wisconsin, 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 in Milwaukee. January is the month with the most snowfall. Snow falls for 6.6 days and accumulates 1.1" (28mm) of snow.

Ocean temperature

In Milwaukee, Wisconsin, in January, the average water temperature is 37.4°F (3°C).
Note: During swimming sessions, this situation poses an instant life risk. The control of breathing is completely lost, hampering clear thinking. Wearing a specialized swimsuit is a necessity to prevent thermal loss.

Daylight

In Milwaukee, 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, in Milwaukee, sunrise is at 7:07 am and sunset at 5:02 pm CST.

Sunshine

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

UV index

January and December, with an average maximum UV index of 1, are months with the lowest UV index in Milwaukee. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV rays for the average person.
Note: The maximum UV index of 1 during January leads to these instructions:
Despite the majority tolerating prolonged sun exposure, those with sensitive skin, infants, and children demand continual protection. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
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Frequently asked questions

What part of the year is the coldest in Milwaukee?

During the coldest month in Milwaukee, January, temperatures average a high of 26.1°F (-3.3°C) and a low of 15.8°F (-9°C).

How cold is it in Milwaukee in January?

In Milwaukee, in January, the average high-temperature is 26.1°F (-3.3°C), and the average low-temperature is 15.8°F (-9°C).

What is the most humid month in Milwaukee?

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

What is the average humidity in January in Milwaukee?

The average relative humidity in January is 85%.

How much does it rain in Milwaukee in January?

In Milwaukee, Wisconsin, in January, it is raining for 1.8 days, with typically 0.31" (8mm) of accumulated precipitation.

What is the snowiest month in Milwaukee?

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, Wisconsin, during January, snow falls for 6.6 days and regularly aggregates up to 1.1" (28mm) of snow.

How cold is the water in January in Milwaukee?

In Milwaukee, Wisconsin, 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?

The average day length in January is 9h and 26min.

What time are sunrise and sunset in January in Milwaukee?

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 in Milwaukee?

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

How many hours of sunshine does Milwaukee have in January?

In Milwaukee, the average sunshine duration in January is 3.5h.

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

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

How high is the UV index in January in Milwaukee?

In January, the average daily maximum UV index is 1. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unprotected exposure to 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 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).

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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).

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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).

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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%).

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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").

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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).

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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").

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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).

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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).

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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).

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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).

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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).

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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).

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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).

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Milwaukee, Wisconsin, USA

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