December weather forecast
Brookside, NJ

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Weather in December

The first month of the winter, December, is also a wintry month in Brookside, New Jersey, with temperature in the range of an average low of 29.7°F (-1.3°C) and an average high of 41.2°F (5.1°C).

Temperature

With December's onset, the average high-temperature recedes from November's fresh 50.4°F (10.2°C) to a wintry 41.2°F (5.1°C). December nights are marked by an average low-temperature of 29.7°F (-1.3°C).

Humidity

In Brookside, New Jersey, the average relative humidity in December is 79%.

Rainfall

In Brookside, in December, during 9.9 rainfall days, 2.56" (65mm) of precipitation is typically accumulated. In Brookside, during the entire year, the rain falls for 155.7 days and collects up to 27.64" (702mm) of precipitation.

Snowfall

January through May, November and December are months with snowfall. In Brookside, during December, snow falls for 3.7 days and regularly aggregates up to 1.34" (34mm) of snow. Throughout the year, in Brookside, there are 24.7 snowfall days, and 10.83" (275mm) of snow is accumulated.

Daylight

December has the shortest days of the year in Brookside, with an average of 9h and 18min of daylight.
On the first day of December, sunrise is at 7:03 am and sunset at 4:31 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 4:40 pm EST.

Sunshine

The average sunshine in December is 4.8h.

UV index

The months with the lowest UV index in Brookside are January through March, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for ordinary individuals.
Note: In December, an average UV index of 2 transforms into the following instructions:
Most individuals can handle sun exposure for up to an hour without burning, but children must always be shielded from sun exposure. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
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Frequently asked questions

How cold is December in Brookside?

The high-temperature, in December, in Brookside, is 41.2°F (5.1°C), while the low-temperature averages to 29.7°F (-1.3°C). The average heat index (a.k.a. 'feels like', 'real feel'), which factors the actual air temperature with the relative humidity, in August is evaluated at 87.8°F (31°C).

What is the average humidity in December in Brookside?

In December, the average relative humidity in Brookside, New Jersey, is 79%.

How much does it rain in Brookside in December?

In Brookside, during December, the rain falls for 9.9 days and regularly aggregates up to 2.56" (65mm) of precipitation.

How many days does it snow in December in Brookside?

In Brookside, during December, snow falls for 3.7 days and regularly aggregates up to 1.34" (34mm) of snow.

What is the month with the shortest days in Brookside?

The month with the shortest days in Brookside is December, with an average of 9h and 18min of daylight.

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

In December, the average day length in Brookside, New Jersey, is 9h and 19min.

What time are sunrise and sunset in December in Brookside?

In December, on the first day of the month, sunrise is at 7:03 am and sunset at 4:31 pm. On the last day of the month, in Brookside, sunrise is at 7:22 am and sunset at 4:40 pm EST.

How many hours of sunshine does Brookside have in December?

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

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

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

How high is the UV index in December in Brookside?

In Brookside, the average daily maximum UV index in December is 2. A UV Index value of 2, and less, symbolizes a low health threat from unsafe 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
Brookside, NJ

Average temperature in December - Brookside, NJ
  • Average high temperature in December: 41.2°F

The warmest month (with the highest average high temperature) is July (83.8°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 (65.5°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).

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Average pressure in December
Brookside, NJ

Average pressure in December - Brookside, 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
Brookside, NJ

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

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

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Average humidity in December
Brookside, NJ

Average humidity in December - Brookside, NJ
  • Average humidity in December: 79%

The months with the highest relative humidity are February and October (80%).
The month with the lowest relative humidity is April (74%).

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Average rainfall in December
Brookside, NJ

Average rainfall in December - Brookside, NJ
  • Average rainfall in December: 2.56"

The wettest month (with the highest rainfall) is July (3.11").
The driest month (with the least rainfall) is September (1.57").

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Average rainfall days in December
Brookside, NJ

Average rainfall days in December - Brookside, NJ
  • Average rainfall days in December: 9.9 days

The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is January (7.8 days).

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Average snowfall in December
Brookside, NJ

Average snowfall in December - Brookside, NJ
  • Average snowfall in December: 1.34"

The month with the highest snowfall is March (4.09").
The months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days in December
Brookside, NJ

Average snowfall days in December - Brookside, NJ
  • Average snowfall days in December: 3.7 days

The month with the highest number of snowfall days is January (7.2 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

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

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

The month with the longest days is June (Average daylight: 15h and 6min).
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 30min).

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Average sunshine days in December
Brookside, NJ

Average sunshine days in December - Brookside, NJ
  • Average sunshine days in December: 17.5 days

The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is July (11.2 days).

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Average UV index in December
Brookside, NJ

Average UV index in December - Brookside, 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
Brookside, NJ

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

The months with the most cloud cover are February, March and December (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 34).

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Average visibility in December
Brookside, NJ

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

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

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Brookside, New Jersey, USA

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