January weather forecast
Madison, WI

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The State Capitol building in Madison, Wisconsin, on a beautiful spring evening
The State Capitol building in Madison, Wisconsin, on a beautiful spring evening

Weather in January

January brings the coldest weather to Madison, Wisconsin with average high and low temperatures standing at 23.9°F (-4.5°C) and 10.8°F (-11.8°C) respectively. This wintry climate is accompanied by a substantial amount of snowfall. The relatively short daylight hours, peaking at 9.4 hours, offer limited sunshine further characterizing this winter month. Post New Year celebrations, the city seems to be enveloped in a white blanket of snow. Low visibility due to high humidity and overcast skies are common, making it an ideal time for indoor activities.

Temperature

With an average high-temperature of 23.9°F (-4.5°C) and an average low-temperature of 10.8°F (-11.8°C), January is the coldest month.

Humidity

January and February, with an average relative humidity of 88%, are the most humid months.

Rainfall

January, March, November and December are months with the least rain when the rain falls for 1.1 days and typically aggregates up to 0.24" (6mm) of rain.

Snowfall

January through April, October through December are months with snowfall. In Madison, in January, during 5.6 snowfall days, 0.87" (22mm) of snow is typically accumulated. In Madison, during the entire year, snow falls for 22.6 days and aggregates up to 2.83" (72mm) of snow.

Daylight

In Madison, the average length of the day in January is 9h and 26min.
On the first day of the month, sunrise is at 7:29 am and sunset at 4:33 pm. On the last day of January, sunrise is at 7:13 am and sunset at 5:08 pm CST.

Sunshine

With an average of 3.3h of sunshine, January has the least sunshine of the year in Madison, Wisconsin.

UV index

The months with the lowest UV index are January, November and December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: In January, the maximum UV index of 1 suggests this advice:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. It's recommended to limit sun exposure when its radiation is at its peak during midday. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.

Frequently asked questions

What are the coldest months?

With its average high temperature of 23.9°F (-4.5°C) and a low of 10.8°F (-11.8°C), January is regarded as the coldest month.

How cold is it in January?

In January, the average high-temperature and low-temperature are 23.9°F (-4.5°C) and 10.8°F (-11.8°C) respectively.

What are the most humid months?

January and February, with an average relative humidity of 88%, are most humid months in Madison.

What is the average humidity in January?

In Madison, Wisconsin, the average relative humidity in January is 88%.

What is the driest month?

January, March, November and December are months with the least rain when the rain falls for 1.1 days and typically aggregates up to 0.24" (6mm) of rain.

How many days does it rain in January?

In Madison, in January, during 1.1 rainfall days, 0.24" (6mm) of precipitation is typically accumulated.

How many days does it snow in January?

In Madison, in January, during 5.6 snowfall days, 0.87" (22mm) of snow is typically accumulated.

How many hours of daylight does Madison have in January?

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

When are sunrise and sunset in January?

On the first day of January, sunrise is at 7:29 am and sunset at 4:33 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 5:08 pm CST.

What is the month with the least sunshine?

January has the least sunshine of the year, with an average of 3.3h of sunshine.

How long on average sun shines in January?

In January, the average sunshine duration is 3.3h.

What are the months with the lowest UV index?

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

What is the UV index reading in January?

In Madison, the average daily maximum UV index in January is 1. A UV Index value of 2, and less, symbolizes a minimal health vulnerability 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
Madison, WI

Average temperature in January - Madison, WI
  • Average high temperature in January: 23.9°F

The warmest month (with the highest average high temperature) is July (78.6°F).
The month with the lowest average high temperature is January (23.9°F).

  • Average low temperature in January: 10.8°F

The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (10.8°F).

Average pressure in January
Madison, WI

Average pressure in January - Madison, WI
  • Average pressure in January: 30.11"Hg

The months with the highest atmospheric pressure are January and February (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in January
Madison, WI

Average wind speed in January - Madison, WI
  • Average wind speed in January: 9.8mph

The windiest month (with the highest average wind speed) is April (10.1mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).

Average humidity in January
Madison, WI

Average humidity in January - Madison, WI
  • Average humidity in January: 88%

The months with the highest relative humidity are January and February (88%).
The months with the lowest relative humidity are April and October (77%).

Average rainfall in January
Madison, WI

Average rainfall in January - Madison, WI
  • Average rainfall in January: 0.24"

The wettest month (with the highest rainfall) is July (0.63").
The driest months (with the least rainfall) are January, March, November and December (0.24").

Average rainfall days in January
Madison, WI

Average rainfall days in January - Madison, WI
  • Average rainfall days in January: 1.1 days

The month with the highest number of rainy days is June (6.7 days).
The month with the least rainy days is January (1.1 days).

Average snowfall in January
Madison, WI

Average snowfall in January - Madison, WI
  • Average snowfall in January: 0.87"

The month with the highest snowfall is February (0.94").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in January
Madison, WI

Average snowfall days in January - Madison, WI
  • Average snowfall days in January: 5.6 days

The month with the highest number of snowfall days is January (5.6 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in January /
Average sunshine in January
Madison, WI

Average daylight in January / Average sunshine in January - Madison, 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 2min

The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 18min).

Average sunshine days in January
Madison, WI

Average sunshine days in January - Madison, WI
  • Average sunshine days in January: 26.7 days

The month with the most sunshine days is December (27 days).
The month with the least sunshine days is June (19.8 days).

Average UV index in January
Madison, WI

Average UV index in January - Madison, 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, November and December (UV index 1).

Average cloud cover in January
Madison, WI

Average cloud cover in January - Madison, WI
  • Average cloud cover in January: 66

The month with the most cloud cover is January (Cloud cover 66).
The month with the least cloud cover is August (Cloud cover 34).

Average visibility in January
Madison, WI

Average visibility in January - Madison, WI
  • Average visibility in January: 5mi

The months with the highest visibility are February, March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are January, July, August and September (5mi).

Madison, Wisconsin, USA

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