Milwaukee
Wisconsin, USA
Long-term weather forecast
Long-term weather forecast

January weather forecast and climate
Milwaukee, WI

A view of the modern Milwaukee City in Wisconsin, from Lake Michigan and over the pier
A view of the modern Milwaukee City in Wisconsin, from Lake Michigan and over the pier
January, like December, is another subzero cold winter month in Milwaukee, Wisconsin, with average temperature varying between 15.6°F (-9.1°C) and 28.9°F (-1.7°C).

Temperature

The coldest month is January, with an average high-temperature of 28.9°F (-1.7°C) and an average low-temperature of 15.6°F (-9.1°C).

Humidity

In Milwaukee, Wisconsin, the average relative humidity is 72.3%.

Rainfall

In January, in Milwaukee, the rain falls for 11.4 days. Throughout January, 1.8" (44.7mm) of precipitation is accumulated. In Milwaukee, during the entire year, the rain falls for 126.7 days and collects up to 34.8" (882.9mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall in Milwaukee. January is the month with the most snowfall. Snow falls for 9.8 days and accumulates 14.7" (373.4mm) of snow.

Ocean temperature

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

Daylight

In January, the average length of the day in Milwaukee is 9.4h.

Sunshine

The average sunshine in January is 4.5h.

UV index

January and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a minimal health hazard from the exposure to the Sun's UV rays for ordinary individuals.
The daily maximum UV index of 1 interpret into the following advice:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.

What is the coldest month in Milwaukee?

With an average high-temperature of 28.9°F (-1.7°C) and an average low-temperature of 15.6°F (-9.1°C), January is the coldest month in Milwaukee.

What is the temperature in January in Milwaukee?

The average high-temperature, in January, in Milwaukee, is 28.9°F (-1.7°C), while the average low-temperature is 15.6°F (-9.1°C).

What is the average humidity in January in Milwaukee?

In Milwaukee, Wisconsin, the average relative humidity in January is 72.3%.

How many days does it rain in January in Milwaukee?

In Milwaukee, Wisconsin, in January, during 11.4 rainfall days, 1.8" (44.7mm) of precipitation is typically accumulated.

How much does it snow in Milwaukee in January?

In Milwaukee, in January, snow falls for 9.8 days, with typically accumulated 14.7" (373.4mm) of snow.

When does it snow the most in Milwaukee?

The month with the most snowfall in Milwaukee is January when snow falls for 9.8 days and typically aggregates up to 14.7" (373.4mm) of snow.

How cold is the water in January in Milwaukee?

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 length of the day is 9.4h.

How long on average sun shines in January in Milwaukee?

In January, the average sunshine in Milwaukee is 4.5h.

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.

How high is the UV index in January in Milwaukee?

The average daily maximum UV index in January in Milwaukee, Wisconsin, is 1. A UV Index of 2, and less, symbolizes a low health threat from the exposure to the Sun's UV rays.
Average temperature in January - Milwaukee, WI
  • Average high temperature in January: 28.9°F

The warmest month (with the highest average high temperature) is July (80.1°F).
The month with the lowest average high temperature is January (28.9°F).

  • Average low temperature in January: 15.6°F

The month with the highest average low temperature is July (63.5°F).
The coldest month (with the lowest average low temperature) is January (15.6°F).

Average humidity in January - Milwaukee, WI
  • Average humidity in January: 72.3%

The month with the highest relative humidity is December (75.9%).
Months with the lowest relative humidity are April and May (68.5%).

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

The wettest month (with the highest rainfall) is August (4").
The driest month (with the lowest rainfall) is February (1.7").

Average rainfall days in January - Milwaukee, WI
  • Average rainfall days in January: 11.4 days

The month with the highest number of rainy days is April (12.1 days).
The month with the lowest number of rainy days is September (8.8 days).

Average snowfall in January - Milwaukee, WI
  • Average snowfall in January: 14.7"

The month with the highest snowfall is January (14.7").
Months with the lowest snowfall are June, July, August and September (0").

Average snowfall days in January - Milwaukee, WI
  • Average snowfall days in January: 9.8 days

The month with the highest number of snowfall days is January (9.8 days).
Months with the lowest number of snowfall days are June, July, August and September (0 days).

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: 9.4h

The month with the longest days is June (Average daylight: 15.3h).
The month with shortest days is December (Average daylight: 9.1h).

  • Average sunshine in January: 4.5h

The month with most sunshine is July (Average sunshine: 10.4h).
The month with least sunshine is December (Average sunshine: 3.4h).

Average UV index in January - Milwaukee, WI
  • Average UV index in January: 1

Months with the highest UV index are June, July and August (UV index 8).
Months with the lowest UV index are January and December (UV index 1).