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

December weather forecast and climate
Madison, WI

A view of the State Capitol building in Madison, Wisconsin, on a beautiful spring evening
A view of the State Capitol building in Madison, Wisconsin, on a beautiful spring evening
The first month of the winter, December, is also a subzero cold month in Madison, Wisconsin, with average temperature varying between 30.2°F (-1°C) and 16°F (-8.9°C).

Temperature

In December, the average high-temperature drops, from a chilly 44.1°F (6.7°C) in November, to a freezing cold 30.2°F (-1°C). The average low-temperature, in Madison, is 16°F (-8.9°C).

Humidity

The most humid month is December, with an average relative humidity of 78.5%.

Rainfall

In December, in Madison, the rain falls for 10.1 days. Throughout December, 1.7" (44.2mm) of precipitation is accumulated. In Madison, during the entire year, the rain falls for 124.8 days and collects up to 34.5" (875.9mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. The month with the most snowfall in Madison is December when snow falls for 8.7 days and typically aggregates up to 13.5" (342.9mm) of snow.

Daylight

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

Sunshine

The month with the least sunshine in Madison is December, with an average of 3.5h of sunshine.

UV index

Months with the lowest UV index in Madison are January and December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a low threat to health from unprotected exposure to the Sun's UV rays for average individuals.
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 solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

What is the temperature in December in Madison?

In Madison, Wisconsin, in December, the average high-temperature is 30.2°F (-1°C), and the average low-temperature is 16°F (-8.9°C).

What is the most humid month in Madison?

December is the most humid month in Madison, Wisconsin, with an average relative humidity of 78.5%.

What is the average humidity in December in Madison?

In Madison, Wisconsin, the average relative humidity in December is 78.5%.

How many days does it rain in December in Madison?

In Madison, in December, it is raining for 10.1 days, with typically 1.7" (44.2mm) of accumulated precipitation.

How much does it snow in Madison in December?

In Madison, Wisconsin, in December, during 8.7 snowfall days, 13.5" (342.9mm) of snow is typically accumulated.

When does it snow the most in Madison?

The month with the most snowfall in Madison, Wisconsin, is December when snow falls for 8.7 days and typically aggregates up to 13.5" (342.9mm) of snow.

What is the month with the shortest days in Madison?

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

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

The average length of the day in December is 9.1h.

What is the month with the least sunshine in Madison?

December has the least sunshine of the year, with an average of 3.5h of sunshine.

How long on average sun shines in December in Madison?

In Madison, Wisconsin, the average sunshine in December is 3.5h.

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

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

What is the UV index reading in December in Madison?

The average daily maximum UV index in December in Madison is 1. A UV Index reading of 2, and below, represents a low health threat from unprotected exposure to the UV radiation.
Average temperature in December - Madison, WI
  • Average high temperature in December: 30.2°F

The warmest month (with the highest average high temperature) is July (81.6°F).
The month with the lowest average high temperature is January (26.4°F).

  • Average low temperature in December: 15.9°F

The month with the highest average low temperature is July (61°F).
The coldest month (with the lowest average low temperature) is January (11.1°F).

Average humidity in December - Madison, WI
  • Average humidity in December: 78.5%

The month with the highest relative humidity is December (78.5%).
The month with the lowest relative humidity is May (65.8%).

Average rainfall in December - Madison, WI
  • Average rainfall in December: 1.7"

The wettest month (with the highest rainfall) is June (4.5").
The driest month (with the lowest rainfall) is January (1.2").

Average rainfall days in December - Madison, WI
  • Average rainfall days in December: 10.1 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 February (9.2 days).

Average snowfall in December - Madison, WI
  • Average snowfall in December: 13.5"

The month with the highest snowfall is December (13.5").
Months with the lowest snowfall are June, July, August and September (0").

Average snowfall days in December - Madison, WI
  • Average snowfall days in December: 8.7 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 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 shortest days is December (Average daylight: 9.1h).

  • Average sunshine in December: 3.5h

Months with most sunshine are June and July (Average sunshine: 9.8h).
The month with least sunshine is December (Average sunshine: 3.5h).

Average UV index in December - Madison, WI
  • Average UV index in December: 1

The month with the highest UV index is July (UV index 9).
Months with the lowest UV index are January and December (UV index 1).