December weather forecast
Sergeantsville, NJ

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Weather in December

The first month of the winter, December, is also a wintry month in Sergeantsville, New Jersey, with an average temperature varying between 30.7°F (-0.7°C) and 42.4°F (5.8°C).

Temperature

During the transition into December, Sergeantsville observes a decrease in the average high-temperature, falling from a fresh 51.4°F (10.8°C) in November to a wintry 42.4°F (5.8°C). Sergeantsville's nighttime temperature during December is consistently averaged at a freezing cold 30.7°F (-0.7°C).

Humidity

In December, the average relative humidity is 78%.

Rainfall

In December, the rain falls for 11.3 days. Throughout December, 2.87" (73mm) of precipitation is accumulated. Throughout the year, in Sergeantsville, there are 158.5 rainfall days, and 28.31" (719mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. In Sergeantsville, in December, snow falls for 3.7 days, with typically accumulated 1.42" (36mm) of snow. In Sergeantsville, during the entire year, snow falls for 23 days and aggregates up to 9.45" (240mm) of snow.

Daylight

The month with the shortest days in Sergeantsville is December, with an average of 9h and 18min of daylight.
On the first day of December in Sergeantsville, sunrise is at 7:04 am and sunset at 4:33 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 4:43 pm EST.

Sunshine

In Sergeantsville, the average sunshine in December is 4.9h.

UV index

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: In December, the average maximum UV index of 2 translates into the following recommendations:
Most people face no serious problems with extended sun exposure, but those with fair skin, infants, and children always need protection. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Is December cold in Sergeantsville?

The high-temperature, in December, in Sergeantsville, is 42.4°F (5.8°C), while the low-temperature averages to 30.7°F (-0.7°C). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which factors the actual air temperature with the relative humidity, in August is calculated to be 89.6°F (32°C).

What is the average humidity in December in Sergeantsville?

The average relative humidity in December in Sergeantsville is 78%.

How many days does it rain in December in Sergeantsville?

In Sergeantsville, New Jersey, in December, during 11.3 rainfall days, 2.87" (73mm) of precipitation is typically accumulated.

How many days does it snow in December in Sergeantsville?

In Sergeantsville, during December, snow falls for 3.7 days and regularly aggregates up to 1.42" (36mm) of snow.

What is the month with the shortest days in Sergeantsville?

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

How many hours of daylight does Sergeantsville have in December?

The average day length in December in Sergeantsville, New Jersey, is 9h and 20min.

When are sunrise and sunset in December in Sergeantsville?

On the first day of December in Sergeantsville, New Jersey, sunrise is at 7:04 am and sunset at 4:33 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 4:43 pm EST.

How long on average sun shines in December in Sergeantsville?

The average sunshine duration in December in Sergeantsville is 4.9h.

When is the lowest UV index in Sergeantsville?

January through March, 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 Sergeantsville?

In December, the average daily maximum UV index is 2. A UV Index reading of 2, and below, represents 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
Sergeantsville, NJ

Average temperature in December - Sergeantsville, NJ
  • Average high temperature in December: 42.4°F

The warmest month (with the highest average high temperature) is July (84.9°F).
The month with the lowest average high temperature is January (36.1°F).

  • Average low temperature in December: 30.7°F

The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (23.5°F).

Average pressure in December
Sergeantsville, NJ

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

The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed in December
Sergeantsville, NJ

Average wind speed in December - Sergeantsville, NJ
  • Average wind speed in December: 7.7mph

The windiest month (with the highest average wind speed) is March (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).

Average humidity in December
Sergeantsville, NJ

Average humidity in December - Sergeantsville, NJ
  • Average humidity in December: 78%

The months with the highest relative humidity are February and October (79%).
The months with the lowest relative humidity are April and July (74%).

Average rainfall in December
Sergeantsville, NJ

Average rainfall in December - Sergeantsville, NJ
  • Average rainfall in December: 2.87"

The wettest month (with the highest rainfall) is July (2.99").
The driest month (with the least rainfall) is September (1.61").

Average rainfall days in December
Sergeantsville, NJ

Average rainfall days in December - Sergeantsville, NJ
  • Average rainfall days in December: 11.3 days

The months with the highest number of rainy days are May and July (16.8 days).
The month with the least rainy days is November (8.9 days).

Average snowfall in December
Sergeantsville, NJ

Average snowfall in December - Sergeantsville, NJ
  • Average snowfall in December: 1.42"

The month with the highest snowfall is March (2.91").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Sergeantsville, NJ

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

The month with the highest number of snowfall days is January (7 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Sergeantsville, 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 30min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

Average sunshine days in December
Sergeantsville, NJ

Average sunshine days in December - Sergeantsville, NJ
  • Average sunshine days in December: 16.5 days

The month with the most sunshine days is November (19.3 days).
The month with the least sunshine days is June (11.7 days).

Average UV index in December
Sergeantsville, NJ

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

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

Average cloud cover in December
Sergeantsville, NJ

Average cloud cover in December - Sergeantsville, NJ
  • Average cloud cover in December: 48

The months with the most cloud cover are February and December (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 33).

Average visibility in December
Sergeantsville, NJ

Average visibility in December - Sergeantsville, 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).

Sergeantsville, New Jersey, USA

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