December weather forecast and climate
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 average temperature fluctuating between 20.3°F (-6.5°C) and 30.4°F (-0.9°C).

Temperature

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

Humidity

In December, the average relative humidity in Madison 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

Months with snowfall in Madison are January through April, October through December. In December, it is snowing for 4.9 days. Throughout December, 0.16" (4mm) of snow is accumulated. Throughout the year, in Madison, there are 22.6 snowfall days, and 2.83" (72mm) of snow is accumulated.

Daylight

December has the shortest days of the year in Madison, with an average of 9.1h of daylight.

Sunshine

In Madison, the average sunshine is 3.9h.

UV index

January, November and December, with an average maximum UV index of 1, are months with the lowest UV index in Madison. A UV Index reading of 2, and below, represents a low threat to health from the exposure to the Sun's UV rays for the ordinary person.
Note: The average daily UV index of 1 transform into the following instructions:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
[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, Wisconsin, the average relative humidity in December is 84%.

How much does it rain in Madison in December?

In December, the rain falls for 2 days. Throughout December, 0.24" (6mm) of precipitation is accumulated.

What is the driest month in Madison?

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

How much does it snow in Madison in December?

In Madison, in December, snow falls for 4.9 days, with typically accumulated 0.16" (4mm) of snow.

What is the month with the shortest days in Madison?

With an average of 9.1h 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 length of the day in December is 9.1h.

How many hours of sunshine does Madison have in December?

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

What are the months with the lowest UV index in Madison?

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 reading in December in Madison?

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

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"

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

[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%

Months with the highest relative humidity are January and February (88%).
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").
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).
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: 9.1h

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

  • Average sunshine in December: 3.9h

The month with the most sunshine is July (Average sunshine: 9.8h).
The month with the least sunshine is January (Average sunshine: 3.3h).

[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

Months with the highest UV index are June and July (UV index 6).
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

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

[Resources]