December weather forecast
Bound Brook, NJ

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Weather in December

The first month of the winter, December, is also an icy month in Bound Brook, New Jersey, with temperature in the range of an average low of 30.7°F (-0.7°C) and an average high of 41.9°F (5.5°C).

Temperature

Bound Brook's December weather shows a moderate shift in high-temperatures, falling from November's fresh 50.9°F (10.5°C) to a wintry 41.9°F (5.5°C). Bound Brook experiences a nighttime temperature average of 30.7°F (-0.7°C) during December.

Humidity

The average relative humidity in December in Bound Brook is 78%.

Rainfall

The month with the most rainfall in Bound Brook is December, when the rain falls for 10.5 days and typically aggregates up to 3.31" (84mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. In Bound Brook, in December, during 4.3 snowfall days, 2.13" (54mm) of snow is typically accumulated. Throughout the year, there are 26.7 snowfall days, and 12.68" (322mm) of snow is accumulated.

Daylight

December has the shortest days of the year, 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 4:31 pm. On the last day of December, in Bound Brook, sunrise is at 7:21 am and sunset at 4:41 pm EST.

Sunshine

In December, the average sunshine 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 Bound Brook. A UV Index reading of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: A maximum UV index of 2 in December translates into the following recommendations:
Long-term sun exposure is typically not a concern for most. However, those with sensitive skin, infants, and children must always have protection. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.
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Frequently asked questions

Is it cold in Bound Brook during December?

The high-temperature, in December, in Bound Brook, records 41.9°F (5.5°C), while the low-temperature is 30.7°F (-0.7°C). In August, the average heat index (a.k.a. 'real feel', 'feels like'), which represents the influence of relative humidity on air temperature, is appraised at 87.8°F (31°C).

What is the average humidity in December in Bound Brook?

In December, the average relative humidity in Bound Brook, New Jersey, is 78%.

What is the wettest month in Bound Brook?

December is the month with the most rainfall in Bound Brook, New Jersey. Rain falls for 10.5 days and accumulates 3.31" (84mm) of precipitation.

How much does it rain in Bound Brook in December?

In Bound Brook, during December, the rain falls for 10.5 days and regularly aggregates up to 3.31" (84mm) of precipitation.

How many days does it snow in December in Bound Brook?

In December, in Bound Brook, New Jersey, it is snowing for 4.3 days. Throughout December, 2.13" (54mm) of snow is accumulated.

What is the month with the shortest days in Bound Brook?

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

What is the average length of the day in December in Bound Brook?

In Bound Brook, New Jersey, the average day length in December is 9h and 20min.

What time are sunrise and sunset in December in Bound Brook?

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, sunrise is at 7:21 am and sunset at 4:41 pm EST.

How many hours of sunshine does Bound Brook have in December?

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

What are the months with the lowest UV index in Bound Brook?

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

How high is the UV index in December in Bound Brook?

In December, the average daily maximum UV index in Bound Brook, New Jersey, is 2. A UV Index of 2, and less, symbolizes a minimal hazard to health 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
Bound Brook, NJ

Average temperature in December - Bound Brook, NJ
  • Average high temperature in December: 41.9°F

The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is January (35.6°F).

  • Average low temperature in December: 30.7°F

The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (23.2°F).

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Average pressure in December
Bound Brook, NJ

Average pressure in December - Bound Brook, 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
Bound Brook, NJ

Average wind speed in December - Bound Brook, NJ
  • Average wind speed in December: 7.8mph

The windiest month (with the highest average wind speed) is March (8.6mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).

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Average humidity in December
Bound Brook, NJ

Average humidity in December - Bound Brook, NJ
  • Average humidity in December: 78%

The month with the highest relative humidity is February (79%).
The months with the lowest relative humidity are April and August (73%).

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Average rainfall in December
Bound Brook, NJ

Average rainfall in December - Bound Brook, NJ
  • Average rainfall in December: 3.31"

The wettest month (with the highest rainfall) is December (3.31").
The driest month (with the least rainfall) is September (1.57").

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Average rainfall days in December
Bound Brook, NJ

Average rainfall days in December - Bound Brook, NJ
  • Average rainfall days in December: 10.5 days

The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is January (8.4 days).

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Average snowfall in December
Bound Brook, NJ

Average snowfall in December - Bound Brook, NJ
  • Average snowfall in December: 2.13"

The month with the highest snowfall is March (4.06").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Bound Brook, NJ

Average snowfall days in December - Bound Brook, NJ
  • Average snowfall days in December: 4.3 days

The month with the highest number of snowfall days is January (7.8 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
Bound Brook, NJ

Average daylight in December / Average sunshine in December - Bound Brook, 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
Bound Brook, NJ

Average sunshine days in December - Bound Brook, NJ
  • Average sunshine days in December: 16.8 days

The month with the most sunshine days is November (18.4 days).
The month with the least sunshine days is May (11.6 days).

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Average UV index in December
Bound Brook, NJ

Average UV index in December - Bound Brook, 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
Bound Brook, NJ

Average cloud cover in December - Bound Brook, 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
Bound Brook, NJ

Average visibility in December - Bound Brook, NJ
  • Average visibility in December: 6mi

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

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Bound Brook, New Jersey, USA

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