December weather forecast
Madison, IL

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Weather in December

The first month of the winter, December, is still a cold month in Madison, Illinois, with an average temperature varying between 30.2°F (-1°C) and 41.9°F (5.5°C).

Temperature

The arrival of December signals a shift in temperature, down from a cool 52.9°F (11.6°C) in November to a wintry 41.9°F (5.5°C). December generally records an average low-temperature of 30.2°F (-1°C).

Humidity

In December, the average relative humidity in Madison is 76%.

Rainfall

In Madison, during December, the rain falls for 9.2 days and regularly aggregates up to 2.32" (59mm) of precipitation. In Madison, during the entire year, the rain falls for 159.5 days and collects up to 36.06" (916mm) of precipitation.

Snowfall

Months with snowfall in Madison are January through March, November and December. In December, in Madison, it is snowing for 4 days. Throughout December, 2.2" (56mm) of snow is accumulated. In Madison, during the entire year, snow falls for 20.3 days and aggregates up to 8.07" (205mm) of snow.

Daylight

With an average of 9h and 30min of daylight, December has the shortest days of the year.
On the first day of December, sunrise is at 7:00 am and sunset at 4:39 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 4:49 pm CST.

Sunshine

In December, the average sunshine is 4.9h.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: A daily maximum UV index of 2 in December translates into the following instructions:
Although the majority can endure up to an hour in the sun without burns, children always require sun protection. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Be vigilant! The reflective nature of snow can increase the Sun's UV radiation nearly twofold.
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Frequently asked questions

Is it cold in Madison during December?

In December, in Madison, the average high-temperature is 41.9°F (5.5°C), and the average low-temperature is 30.2°F (-1°C). In August, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, is calculated to be 95°F (35°C).

What is the average humidity in December in Madison?

In Madison, the average relative humidity in December is 76%.

How much does it rain in Madison in December?

In December, the rain falls for 9.2 days. Throughout December, 2.32" (59mm) of precipitation is accumulated.

How many days does it snow in December in Madison?

In Madison, Illinois, during December, snow falls for 4 days and regularly aggregates up to 2.2" (56mm) of snow.

What is the month with the shortest days in Madison?

December has the shortest days of the year in Madison, Illinois, with an average of 9h and 30min of daylight.

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

The average day length in December is 9h and 31min.

When is the sunrise / sunset in December in Madison?

On the first day of December in Madison, sunrise is at 7:00 am and sunset at 4:39 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 4:49 pm CST.

How long on average sun shines in December in Madison?

In Madison, the average sunshine duration in December is 4.9h.

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

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index.

What is the UV index reading in December in Madison?

The average daily maximum UV index in December in Madison is 2. A UV Index value of 2, and less, symbolizes 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, IL

Average temperature in December - Madison, IL
  • Average high temperature in December: 41.9°F

The warmest month (with the highest average high temperature) is July (86.2°F).
The month with the lowest average high temperature is January (37.2°F).

  • Average low temperature in December: 30.2°F

The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).

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Average pressure in December
Madison, IL

Average pressure in December - Madison, IL
  • Average pressure in December: 30.13"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed in December
Madison, IL

Average wind speed in December - Madison, IL
  • Average wind speed in December: 8.7mph

The windiest month (with the highest average wind speed) is January (9.4mph).
The calmest month (with the lowest average wind speed) is July (5.5mph).

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Average humidity in December
Madison, IL

Average humidity in December - Madison, IL
  • Average humidity in December: 76%

The month with the highest relative humidity is May (78%).
The month with the lowest relative humidity is October (71%).

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Average rainfall in December
Madison, IL

Average rainfall in December - Madison, IL
  • Average rainfall in December: 2.32"

The wettest month (with the highest rainfall) is May (4.21").
The driest month (with the least rainfall) is February (1.93").

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Average rainfall days in December
Madison, IL

Average rainfall days in December - Madison, IL
  • Average rainfall days in December: 9.2 days

The months with the highest number of rainy days are May and July (17.8 days).
The month with the least rainy days is January (8.4 days).

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Average snowfall in December
Madison, IL

Average snowfall in December - Madison, IL
  • Average snowfall in December: 2.2"

The month with the highest snowfall is February (2.4").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in December
Madison, IL

Average snowfall days in December - Madison, IL
  • Average snowfall days in December: 4 days

The month with the highest number of snowfall days is January (6.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Madison, IL
  • Average daylight in December: 9h and 3min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in December: 4h and 5min

The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).

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Average sunshine days in December
Madison, IL

Average sunshine days in December - Madison, IL
  • Average sunshine days in December: 18 days

The month with the most sunshine days is December (18 days).
The month with the least sunshine days is June (10.1 days).

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Average UV index in December
Madison, IL

Average UV index in December - Madison, IL
  • Average UV index in December: 2

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in December
Madison, IL

Average cloud cover in December - Madison, IL
  • Average cloud cover in December: 48

The month with the most cloud cover is January (Cloud cover 50).
The months with the least cloud cover are June and August (Cloud cover 28).

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Average visibility in December
Madison, IL

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

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

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Madison, Illinois, USA

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