December weather forecast
Herbertsville, NJ

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Weather in December

The first month of the winter, December, is also a frosty month in Herbertsville, New Jersey, with an average temperature fluctuating between 37°F (2.8°C) and 45°F (7.2°C).

Temperature

December indicates a minor shift in the average high-temperature, from November's cool 52.9°F (11.6°C) to a frosty 45°F (7.2°C). In Herbertsville, a slight decrease from the daytime peak is noted during the month of December, with an average low-temperature of 37°F (2.8°C).

Humidity

In December, the average relative humidity is 76%.

Rainfall

In Herbertsville, in December, it is raining for 12.2 days, with typically 3.7" (94mm) of accumulated precipitation. Throughout the year, there are 158.1 rainfall days, and 34.13" (867mm) of precipitation is accumulated.

Snowfall

January through April, November and December are months with snowfall. In Herbertsville, during December, snow falls for 2.4 days and regularly aggregates up to 1.22" (31mm) of snow. In Herbertsville, during the entire year, snow falls for 14.1 days and aggregates up to 4.76" (121mm) of snow.

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, sunrise is at 7:18 am and sunset at 4:41 pm EST.

Sunshine

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 value of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for the average person.
Note: In December, the maximum UV index of 2 suggests this advice:
It is important to always shield children, babies, and individuals with sensitive skin from prolonged exposure to the sun. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. Enhance your sun protection with tightly woven, yet airy clothing. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
Updated: Jul 22, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in December?

An average high-temperature, in December, in Herbertsville, is 45°F (7.2°C) and the average low-temperature is 37°F (2.8°C).

What is the average humidity in December?

The average relative humidity in December is 76%.

How many days does it rain in December?

In December, the rain falls for 12.2 days. Throughout December, 3.7" (94mm) of precipitation is accumulated.

How many days does it snow in December?

In Herbertsville, during December, snow falls for 2.4 days and regularly aggregates up to 1.22" (31mm) of snow.

What is the month with the shortest days?

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

How many hours of daylight does Herbertsville have in December?

The average day length in December is 9h and 23min.

When is the sunrise / sunset in December?

On the first day of December, sunrise is at 6:59 am and sunset at 4:31 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 4:41 pm EST.

How long on average sun shines in December?

The average sunshine duration in December in Herbertsville is 5.1h.

What is the month with the lowest UV index?

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

What is the UV index intensity in December?

The average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents a low health risk from unprotected exposure to 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
Herbertsville, NJ

Average temperature in December - Herbertsville, 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
Herbertsville, NJ

Average pressure in December - Herbertsville, 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
Herbertsville, NJ

Average wind speed in December - Herbertsville, 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
Herbertsville, NJ

Average humidity in December - Herbertsville, 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
Herbertsville, NJ

Average rainfall in December - Herbertsville, 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
Herbertsville, NJ

Average rainfall days in December - Herbertsville, 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
Herbertsville, NJ

Average snowfall in December - Herbertsville, 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
Herbertsville, NJ

Average snowfall days in December - Herbertsville, 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
Herbertsville, NJ

Average daylight in December / Average sunshine in December - Herbertsville, 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
Herbertsville, NJ

Average sunshine days in December - Herbertsville, 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
Herbertsville, NJ

Average UV index in December - Herbertsville, 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
Herbertsville, NJ

Average cloud cover in December - Herbertsville, 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
Herbertsville, NJ

Average visibility in December - Herbertsville, 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).

Herbertsville, New Jersey, USA

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