December weather forecast
Sterling Woods, NJ

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Weather in December

The first month of the winter, December, is still a chilly month in Sterling Woods, New Jersey, with temperature in the range of an average low of 37°F (2.8°C) and an average high of 45°F (7.2°C).

Temperature

The transition into December subtly indicates a reduction in the average high-temperature, down to a frosty 45°F (7.2°C) from November's cool 52.9°F (11.6°C). December nighttime temperatures in Sterling Woods hover close to the daytime peak with an average of 37°F (2.8°C).

Humidity

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

Rainfall

In Sterling Woods, during December, the rain falls for 12.2 days and regularly aggregates up to 3.7" (94mm) of precipitation. In Sterling Woods, during the entire year, the rain falls for 158.1 days and collects up to 34.13" (867mm) of precipitation.

Snowfall

January through April, November and December are months with snowfall in Sterling Woods. In Sterling Woods, in December, snow falls for 2.4 days, with typically accumulated 1.22" (31mm) of snow. Throughout the year, there are 14.1 snowfall days, and 4.76" (121mm) of snow is accumulated.

Daylight

The month with the shortest days is December, with an average of 9h and 24min of daylight.
On the first day of the month, sunrise is at 6:59 am and sunset at 4:31 pm. On the last day of December, in Sterling Woods, sunrise is at 7:18 am and sunset at 4:40 pm EST.

Sunshine

In Sterling Woods, New Jersey, the average sunshine in December is 5.1h.

UV index

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: The average daily UV index of 2 in December transforms into the following instructions:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.
Updated: Jul 16, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are December temperatures?

The high-temperature, in December, in Sterling Woods, records 45°F (7.2°C), while the low-temperature is 37°F (2.8°C).

What is the average humidity in December in Sterling Woods?

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

How much does it rain in December?

In Sterling Woods, New Jersey, in December, during 12.2 rainfall days, 3.7" (94mm) of precipitation is typically accumulated.

How many days does it snow in December?

In December, it is snowing for 2.4 days. Throughout December, 1.22" (31mm) of snow is accumulated.

What is the month with the shortest days?

December has the shortest days of the year in Sterling Woods, with an average of 9h and 24min of daylight.

How many hours of daylight does Sterling Woods have in December?

In Sterling Woods, the average day length in December is 9h and 23min.

When are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 6:59 am and sunset at 4:31 pm. On the last day of the month, in Sterling Woods, sunrise is at 7:18 am and sunset at 4:40 pm EST.

How many hours of sunshine does Sterling Woods have in December?

In December, the average sunshine duration is 5.1h.

When is the lowest UV index?

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

How high is the UV index in December in Sterling Woods?

In December, the average daily maximum UV index is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability 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
Sterling Woods, NJ

Average temperature in December - Sterling Woods, NJ
  • Average high temperature in December: 45°F

The warmest month (with the highest average high temperature) is July (79.5°F).
The month with the lowest average high temperature is January (38.8°F).

  • Average low temperature in December: 37°F

The months with the highest average low temperature are July and August (71.2°F).
The coldest month (with the lowest average low temperature) is January (29.7°F).

Average pressure in December
Sterling Woods, NJ

Average pressure in December - Sterling Woods, 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).

Average wind speed in December
Sterling Woods, NJ

Average wind speed in December - Sterling Woods, NJ
  • Average wind speed in December: 12.4mph

The windiest month (with the highest average wind speed) is January (13mph).
The calmest month (with the lowest average wind speed) is July (8.5mph).

Average humidity in December
Sterling Woods, NJ

Average humidity in December - Sterling Woods, NJ
  • Average humidity in December: 76%

The months with the highest relative humidity are May and June (80%).
The months with the lowest relative humidity are January and November (74%).

Average rainfall in December
Sterling Woods, NJ

Average rainfall in December - Sterling Woods, NJ
  • Average rainfall in December: 3.7"

The wettest month (with the highest rainfall) is July (3.78").
The driest month (with the least rainfall) is January (2.05").

Average rainfall days in December
Sterling Woods, NJ

Average rainfall days in December - Sterling Woods, NJ
  • Average rainfall days in December: 12.2 days

The month with the highest number of rainy days is July (16.6 days).
The month with the least rainy days is January (9.3 days).

Average snowfall in December
Sterling Woods, NJ

Average snowfall in December - Sterling Woods, NJ
  • Average snowfall in December: 1.22"

The month with the highest snowfall is January (1.3").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in December
Sterling Woods, NJ

Average snowfall days in December - Sterling Woods, NJ
  • Average snowfall days in December: 2.4 days

The month with the highest number of snowfall days is February (4.4 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in December /
Average sunshine in December
Sterling Woods, NJ

Average daylight in December / Average sunshine in December - Sterling Woods, 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 24min).

  • Average sunshine in December: 5h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).

Average sunshine days in December
Sterling Woods, NJ

Average sunshine days in December - Sterling Woods, NJ
  • Average sunshine days in December: 15.5 days

The month with the most sunshine days is November (17.6 days).
The month with the least sunshine days is July (12.8 days).

Average UV index in December
Sterling Woods, NJ

Average UV index in December - Sterling Woods, 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, November and December (UV index 2).

Average cloud cover in December
Sterling Woods, NJ

Average cloud cover in December - Sterling Woods, NJ
  • Average cloud cover in December: 47

The months with the most cloud cover are February and December (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 27).

Average visibility in December
Sterling Woods, NJ

Average visibility in December - Sterling Woods, NJ
  • 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).

Sterling Woods, New Jersey, USA

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