December weather forecast
Carpentersville, NJ

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Weather in December

The first month of the winter, December, is still a cold month in Carpentersville, New Jersey, with temperature in the range of an average low of 28.9°F (-1.7°C) and an average high of 40.3°F (4.6°C).

Temperature

A shift in Carpentersville's weather is observed as November turns into December, with the average high temperature reducing from a cool 50°F (10°C) to a cold 40.3°F (4.6°C). Throughout the month of December, the nighttime temperature dips to an average of 28.9°F (-1.7°C).

Humidity

In December, the average relative humidity is 80%.

Rainfall

In Carpentersville, in December, it is raining for 8.5 days, with typically 1.1" (28mm) of accumulated precipitation. In Carpentersville, during the entire year, the rain falls for 124.4 days and collects up to 13.39" (340mm) of precipitation.

Snowfall

January through April, November and December are months with snowfall in Carpentersville. In Carpentersville, New Jersey, during December, snow falls for 3.3 days and regularly aggregates up to 1.1" (28mm) of snow. In Carpentersville, during the entire year, snow falls for 22 days and aggregates up to 5" (127mm) of snow.

Daylight

December has the shortest days of the year in Carpentersville, New Jersey, with an average of 9h and 18min of daylight.
On the first day of December in Carpentersville, sunrise is at 7:05 am and sunset at 4:34 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 4:43 pm EST.

Sunshine

The average sunshine in December in Carpentersville is 4.8h.

UV index

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Carpentersville. A UV Index estimate of 2, and below, represents a low health risk from unsafe exposure to UV radiation for average individuals.
Note: The maximum daily UV index of 2 in December converts into the following recommendations:
While most people are not greatly affected by extended sun exposure, those with fair skin, babies, and children must always have protection. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
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Frequently asked questions

How cold is December in Carpentersville?

The high-temperature during December is 40.3°F (4.6°C) and the low-temperature is 28.9°F (-1.7°C). In August, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which represents the influence of relative humidity on air temperature, is evaluated at 86°F (30°C).

What is the average humidity in December in Carpentersville?

In December, the average relative humidity in Carpentersville is 80%.

How much does it rain in Carpentersville in December?

In December, in Carpentersville, the rain falls for 8.5 days. Throughout December, 1.1" (28mm) of precipitation is accumulated.

How many days does it snow in December in Carpentersville?

In Carpentersville, in December, during 3.3 snowfall days, 1.1" (28mm) of snow is typically accumulated.

What is the month with the shortest days in Carpentersville?

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

How many hours of daylight does Carpentersville have in December?

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

When is the sunrise / sunset in December in Carpentersville?

In December, on the first day of the month, sunrise is at 7:05 am and sunset at 4:34 pm. On the last day of the month, in Carpentersville, New Jersey, sunrise is at 7:24 am and sunset at 4:43 pm EST.

How many hours of sunshine does Carpentersville have in December?

In December, the average sunshine duration in Carpentersville is 4.8h.

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

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

How high is the UV index in December in Carpentersville?

In December, the average daily maximum UV index is 2. A UV Index of 2, and less, symbolizes a low health risk 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
Carpentersville, NJ

Average temperature in December - Carpentersville, NJ
  • Average high temperature in December: 40.3°F

The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (34.3°F).

  • Average low temperature in December: 28.9°F

The month with the highest average low temperature is July (63.9°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).

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Average pressure in December
Carpentersville, NJ

Average pressure in December - Carpentersville, NJ
  • Average pressure in December: 30.09"Hg

The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

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Average wind speed in December
Carpentersville, NJ

Average wind speed in December - Carpentersville, NJ
  • Average wind speed in December: 7.5mph

The windiest month (with the highest average wind speed) is March (8.1mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).

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Average humidity in December
Carpentersville, NJ

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

The month with the highest relative humidity is February (81%).
The months with the lowest relative humidity are April and July (76%).

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Average rainfall in December
Carpentersville, NJ

Average rainfall in December - Carpentersville, NJ
  • Average rainfall in December: 1.1"

The wettest month (with the highest rainfall) is July (1.65").
The driest month (with the least rainfall) is September (0.71").

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Average rainfall days in December
Carpentersville, NJ

Average rainfall days in December - Carpentersville, NJ
  • Average rainfall days in December: 8.5 days

The month with the highest number of rainy days is May (13.9 days).
The month with the least rainy days is January (7.1 days).

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Average snowfall in December
Carpentersville, NJ

Average snowfall in December - Carpentersville, NJ
  • Average snowfall in December: 1.1"

The month with the highest snowfall is February (1.42").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in December
Carpentersville, NJ

Average snowfall days in December - Carpentersville, NJ
  • Average snowfall days in December: 3.3 days

The month with the highest number of snowfall days is February (6.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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

Average daylight in December / Average sunshine in December - Carpentersville, 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 24min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

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Average sunshine days in December
Carpentersville, NJ

Average sunshine days in December - Carpentersville, NJ
  • Average sunshine days in December: 19.8 days

The month with the most sunshine days is November (20.2 days).
The month with the least sunshine days is May (14 days).

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Average UV index in December
Carpentersville, NJ

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

The months with the highest UV index are June and July (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
Carpentersville, NJ

Average cloud cover in December - Carpentersville, NJ
  • Average cloud cover in December: 49

The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 34).

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Average visibility in December
Carpentersville, NJ

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

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

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Carpentersville, New Jersey, USA

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