December weather forecast
Clarks Mills, NJ

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Weather in December

December, the first month of the winter in Clarks Mills, is still a chilly month, with an average temperature ranging between min 34.2°F (1.2°C) and max 43.7°F (6.5°C).

Temperature

In Clarks Mills, the beginning of December is marked by a marginally lowered average high-temperature, shifting from November's fresh 52.2°F (11.2°C) to a frosty 43.7°F (6.5°C). Clarks Mills encounters an average low-temperature of 34.2°F (1.2°C) during December nights.

Humidity

In December, the average relative humidity in Clarks Mills is 76%.

Rainfall

The month with the most rainfall is December, when the rain falls for 12.1 days and typically aggregates up to 3.35" (85mm) of precipitation.

Snowfall

January through April, October through December are months with snowfall. In Clarks Mills, during December, snow falls for 3.5 days and regularly aggregates up to 1.46" (37mm) of snow. Throughout the year, there are 19.1 snowfall days, and 7.64" (194mm) of snow is accumulated.

Daylight

With an average of 9h and 24min of daylight, December has the shortest days of the year in Clarks Mills, New Jersey.
On the first day of December in Clarks Mills, sunrise is at 7:01 am and sunset at 4:31 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 4:41 pm EST.

Sunshine

In Clarks Mills, New Jersey, the average sunshine in December is 5.1h.

UV index

The months with the lowest UV index in Clarks Mills are January through March, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: A maximum UV index of 2 in December translates into the following recommendations:
Infants, children, and people with sensitive skin should always have protection against lengthy periods of sun exposure. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Is it cold in Clarks Mills during December?

During December, Clarks Mills experiences an average high-temperature of 43.7°F (6.5°C) and a low-temperature of 34.2°F (1.2°C). In August, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which factors the actual air temperature with the relative humidity, is estimated at 86°F (30°C).

What is the average humidity in December in Clarks Mills?

In December, the average relative humidity in Clarks Mills, New Jersey, is 76%.

What is the wettest month in Clarks Mills?

The month with the most rainfall in Clarks Mills, New Jersey, is December, when the rain falls for 12.1 days and typically aggregates up to 3.35" (85mm) of precipitation.

How many days does it rain in December in Clarks Mills?

In Clarks Mills, in December, during 12.1 rainfall days, 3.35" (85mm) of precipitation is typically accumulated.

How much does it snow in Clarks Mills in December?

In December, in Clarks Mills, it is snowing for 3.5 days. Throughout December, 1.46" (37mm) of snow is accumulated.

What is the month with the shortest days in Clarks Mills?

The month with the shortest days is December, with an average of 9h and 24min of daylight.

What is the average length of the day in December in Clarks Mills?

In December, the average day length in Clarks Mills, New Jersey, is 9h and 21min.

When is the sunrise / sunset in December in Clarks Mills?

On the first day of December in Clarks Mills, sunrise is at 7:01 am and sunset at 4:31 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 4:41 pm EST.

How many hours of sunshine does Clarks Mills have in December?

The average sunshine duration in December in Clarks Mills is 5.1h.

What is the month with the lowest UV index in Clarks Mills?

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

How high is the UV index in December in Clarks Mills?

The average daily maximum UV index in December in Clarks Mills, New Jersey, 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
Clarks Mills, NJ

Average temperature in December - Clarks Mills, NJ
  • Average high temperature in December: 43.7°F

The warmest month (with the highest average high temperature) is July (82.8°F).
The month with the lowest average high temperature is January (37°F).

  • Average low temperature in December: 34.2°F

The month with the highest average low temperature is July (69.1°F).
The coldest month (with the lowest average low temperature) is January (26.4°F).

Average pressure in December
Clarks Mills, NJ

Average pressure in December - Clarks Mills, 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
Clarks Mills, NJ

Average wind speed in December - Clarks Mills, NJ
  • Average wind speed in December: 9.5mph

The windiest months (with the highest average wind speed) are January and March (10.1mph).
The calmest month (with the lowest average wind speed) is July (6.5mph).

Average humidity in December
Clarks Mills, NJ

Average humidity in December - Clarks Mills, NJ
  • Average humidity in December: 76%

The months with the highest relative humidity are May and June (78%).
The months with the lowest relative humidity are January, March, April, August and November (74%).

Average rainfall in December
Clarks Mills, NJ

Average rainfall in December - Clarks Mills, NJ
  • Average rainfall in December: 3.35"

The wettest month (with the highest rainfall) is December (3.35").
The driest month (with the least rainfall) is September (1.69").

Average rainfall days in December
Clarks Mills, NJ

Average rainfall days in December - Clarks Mills, NJ
  • Average rainfall days in December: 12.1 days

The month with the highest number of rainy days is July (16.4 days).
The months with the least rainy days are January and November (9.8 days).

Average snowfall in December
Clarks Mills, NJ

Average snowfall in December - Clarks Mills, NJ
  • Average snowfall in December: 1.46"

The month with the highest snowfall is March (2.4").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in December
Clarks Mills, NJ

Average snowfall days in December - Clarks Mills, NJ
  • Average snowfall days in December: 3.5 days

The month with the highest number of snowfall days is January (5.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in December /
Average sunshine in December
Clarks Mills, NJ

Average daylight in December / Average sunshine in December - Clarks Mills, 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 42min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).

Average sunshine days in December
Clarks Mills, NJ

Average sunshine days in December - Clarks Mills, NJ
  • Average sunshine days in December: 15.7 days

The month with the most sunshine days is November (18.3 days).
The month with the least sunshine days is June (12.3 days).

Average UV index in December
Clarks Mills, NJ

Average UV index in December - Clarks Mills, 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).

Average cloud cover in December
Clarks Mills, NJ

Average cloud cover in December - Clarks Mills, NJ
  • Average cloud cover in December: 46

The months with the most cloud cover are February and March (Cloud cover 47).
The months with the least cloud cover are July and August (Cloud cover 29).

Average visibility in December
Clarks Mills, NJ

Average visibility in December - Clarks Mills, 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).

Clarks Mills, New Jersey, USA

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