December weather forecast
Madison, NJ

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Weather in December

December, the first month of the winter in Madison, is still a cold month, with an average temperature varying between 29.7°F (-1.3°C) and 40.8°F (4.9°C).

Temperature

Transition from November to December is accompanied by a temperature drop, with average high-temperatures decreasing from a fresh 50.5°F (10.3°C) to an icy 40.8°F (4.9°C). Madison observes an average nighttime temperature of 29.7°F (-1.3°C) during December.

Humidity

The months with the highest humidity are February and December, with an average relative humidity of 80%.

Rainfall

In Madison, in December, it is raining for 11.6 days, with typically 3.03" (77mm) of accumulated precipitation. Throughout the year, in Madison, New Jersey, there are 164.2 rainfall days, and 30.67" (779mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Madison are January through May, October through December. In December, in Madison, it is snowing for 4 days. Throughout December, 1.61" (41mm) of snow is accumulated. Throughout the year, there are 26 snowfall days, and 11.61" (295mm) of snow is accumulated.

Daylight

December has the shortest days of the year in Madison, with an average of 9h and 18min of daylight.
On the first day of the month, sunrise is at 7:03 am and sunset at 4:30 pm. On the last day of December, sunrise is at 7:21 am and sunset at 4:40 pm EST.

Sunshine

In Madison, the average sunshine in December is 4.8h.

UV index

The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for ordinary individuals.
Note: The maximum daily UV index of 2 in December interprets into the following recommendations:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
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Frequently asked questions

Is it cold in Madison during December?

December temperatures in Madison, New Jersey, vary between a high-temperature of 40.8°F (4.9°C) and a low-temperature of 29.7°F (-1.3°C). The average heat index (a.k.a. 'felt air temperature', 'feels like'), which factors the actual air temperature with the relative humidity, in August is computed to be 87.8°F (31°C).

What are the most humid months in Madison?

The months with the highest humidity are February and December, with an average relative humidity of 80%.

What is the average humidity in December in Madison?

In Madison, New Jersey, the average relative humidity in December is 80%.

How much does it rain in Madison in December?

In Madison, New Jersey, in December, during 11.6 rainfall days, 3.03" (77mm) of precipitation is typically accumulated.

How much does it snow in Madison in December?

In December, it is snowing for 4 days. Throughout December, 1.61" (41mm) of snow is accumulated.

What is the month with the shortest days in Madison?

With an average of 9h and 18min of daylight, December has the shortest days of the year.

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

In Madison, the average day length in December is 9h and 19min.

When is the sunrise / sunset in December in Madison?

In December, on the first day of the month, sunrise is at 7:03 am and sunset at 4:30 pm. On the last day of the month, in Madison, sunrise is at 7:21 am and sunset at 4:40 pm EST.

How long on average sun shines in December in Madison?

The average sunshine duration in December in Madison, New Jersey, is 4.8h.

When is the lowest UV index in Madison?

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Madison.

What is the UV index intensity in December in Madison?

In Madison, New Jersey, the average daily maximum UV index in December is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation.
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, NJ

Average temperature in December - Madison, NJ
  • Average high temperature in December: 40.8°F

The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (35.1°F).

  • Average low temperature in December: 29.7°F

The month with the highest average low temperature is July (65.7°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).

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Average pressure in December
Madison, NJ

Average pressure in December - Madison, NJ
  • Average pressure in December: 30.08"Hg

The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed in December
Madison, NJ

Average wind speed in December - Madison, NJ
  • Average wind speed in December: 7.6mph

The windiest month (with the highest average wind speed) is March (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

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Average humidity in December
Madison, NJ

Average humidity in December - Madison, NJ
  • Average humidity in December: 80%

The months with the highest relative humidity are February and December (80%).
The months with the lowest relative humidity are April and August (74%).

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Average rainfall in December
Madison, NJ

Average rainfall in December - Madison, NJ
  • Average rainfall in December: 3.03"

The wettest month (with the highest rainfall) is July (3.27").
The driest month (with the least rainfall) is September (1.69").

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Average rainfall days in December
Madison, NJ

Average rainfall days in December - Madison, NJ
  • Average rainfall days in December: 11.6 days

The month with the highest number of rainy days is July (17.4 days).
The month with the least rainy days is January (8.8 days).

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Average snowfall in December
Madison, NJ

Average snowfall in December - Madison, NJ
  • Average snowfall in December: 1.61"

The month with the highest snowfall is March (3.5").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Madison, NJ

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

The month with the highest number of snowfall days is January (7.6 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Madison, NJ
  • Average daylight in December: 9h and 2min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in December: 4h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

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Average sunshine days in December
Madison, NJ

Average sunshine days in December - Madison, NJ
  • Average sunshine days in December: 15.6 days

The month with the most sunshine days is November (18.3 days).
The month with the least sunshine days is June (10.5 days).

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Average UV index in December
Madison, NJ

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

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

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Average cloud cover in December
Madison, NJ

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

The months with the most cloud cover are February and March (Cloud cover 49).
The months with the least cloud cover are July and August (Cloud cover 34).

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Average visibility in December
Madison, NJ

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

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

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Madison, New Jersey, USA

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