December weather forecast
Madison, WI

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 December

The first month of the winter, December, is still a freezing cold month in Madison, Wisconsin, with an average temperature fluctuating between 20.3°F (-6.5°C) and 30.4°F (-0.9°C).

Temperature

In December, the average high-temperature decreases from a wintry 42.4°F (5.8°C) in November to a subzero cold 30.4°F (-0.9°C). The average low-temperature, in December, is 20.3°F (-6.5°C).

Humidity

In Madison, the average relative humidity in December is 84%.

Rainfall

January, March, November and December are months with the least rain when the rain falls for 2 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 December, it is snowing for 4.9 days. Throughout December, 0.16" (4mm) of snow is accumulated. In Madison, during the entire year, snow falls for 22.6 days and aggregates up to 2.83" (72mm) of snow.

Daylight

The month with the shortest days is December, with an average of 9h and 4min of daylight.
On the first day of the month, sunrise is at 7:09 am and sunset at 4:24 pm. On the last day of December, in Madison, sunrise is at 7:28 am and sunset at 4:32 pm CST.

Sunshine

The average sunshine in December in Madison is 3.9h.

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 estimate of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for average individuals.
Note: In December, the average maximum UV index of 1 translate into the following recommendations:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to 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. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
[Resources]

FAQ

What is the temperature in December in Madison?

In December, in Madison, the average high-temperature is 30.4°F (-0.9°C), and the average low-temperature is 20.3°F (-6.5°C).

What is the average humidity in December in Madison?

In Madison, the average relative humidity in December is 84%.

What is the driest month in Madison?

The months with the least rainfall are January, March, November and December Rain falls for 2 days and accumulates 0.24" (6mm) of rain.

How many days does it rain in December in Madison?

In Madison, Wisconsin, in December, it is raining for 2 days, with typically 0.24" (6mm) of accumulated precipitation.

How much does it snow in Madison in December?

In December, it is snowing for 4.9 days. Throughout December, 0.16" (4mm) of snow is accumulated.

What is the month with the shortest days in Madison?

With an average of 9h and 4min of daylight, December has the shortest days of the year in Madison.

What is the average length of the day in December in Madison?

In Madison, the average day length in December is 9h and 4min.

When are sunrise and sunset in December in Madison?

On the first day of December in Madison, Wisconsin, sunrise is at 7:09 am and sunset at 4:24 pm. On the last day of the month, sunrise is at 7:28 am and sunset at 4:32 pm CST.

How many hours of sunshine does Madison have in December?

In Madison, Wisconsin, the average sunshine duration in December is 3.9h.

When is the lowest UV index in Madison?

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

What is the UV index intensity in December in Madison?

In December, the average daily maximum UV index is 1. A UV Index reading of 2, and below, represents a low health threat from 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 December
Madison, WI

Average temperature in December - Madison, WI
  • Average high temperature in December: 30.4°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 December: 20.3°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).

[Resources]

Average pressure in December
Madison, WI

Average pressure in December - Madison, WI
  • Average pressure in December: 30.09"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).

[Resources]

Average wind speed in December
Madison, WI

Average wind speed in December - Madison, WI
  • Average wind speed in December: 9.4mph

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).

[Resources]

Average humidity in December
Madison, WI

Average humidity in December - Madison, WI
  • Average humidity in December: 84%

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

[Resources]

Average rainfall in December
Madison, WI

Average rainfall in December - Madison, WI
  • Average rainfall in December: 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").

[Resources]

Average rainfall days in December
Madison, WI

Average rainfall days in December - Madison, WI
  • Average rainfall days in December: 2 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).

[Resources]

Average snowfall in December
Madison, WI

Average snowfall in December - Madison, WI
  • Average snowfall in December: 0.16"

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

[Resources]

Average snowfall days in December
Madison, WI

Average snowfall days in December - Madison, WI
  • Average snowfall days in December: 4.9 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).

[Resources]

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

Average daylight in December / Average sunshine in December - Madison, WI
  • Average daylight in December: 9h and 4min

The month with the longest days is June (Average daylight: 15h and 19min).
The month with the shortest days is December (Average daylight: 9h and 4min).

  • Average sunshine in December: 3h and 54min

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).

[Resources]

Average sunshine days in December
Madison, WI

Average sunshine days in December - Madison, WI
  • Average sunshine days in December: 27 days

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

[Resources]

Average UV index in December
Madison, WI

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

[Resources]

Average cloud cover in December
Madison, WI

Average cloud cover in December - Madison, WI
  • Average cloud cover in December: 62

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

[Resources]

Average visibility in December
Madison, WI

Average visibility in December - Madison, WI
  • Average visibility in December: 6mi

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).

[Resources]

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location
* you will be automatically redirected to the weather forecast for your location