December weather forecast
Cookstown, NJ

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Weather in December

The first month of the winter, December, is still a chilly month in Cookstown, New Jersey, with an average temperature fluctuating between 44.2°F (6.8°C) and 32.7°F (0.4°C).

Temperature

December is characterized by a mild reduction in the average high-temperature, from a cool 52.7°F (11.5°C) in November to a chilly 44.2°F (6.8°C). Cookstown temperatures generally rest at a low of 32.7°F (0.4°C) during the December nights.

Humidity

In Cookstown, the average relative humidity in December is 78%.

Rainfall

The month with the most rainfall is December, when the rain falls for 10.9 days and typically aggregates up to 3.7" (94mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. In Cookstown, in December, snow falls for 3.6 days, with typically accumulated 1.5" (38mm) of snow. Throughout the year, there are 19.6 snowfall days, and 10.63" (270mm) of snow is accumulated.

Daylight

December has the shortest days of the year in Cookstown, New Jersey, with an average of 9h and 24min of daylight.
On the first day of the month, sunrise is at 7:01 am and sunset at 4:33 pm. On the last day of December, sunrise is at 7:20 am and sunset at 4:43 pm EST.

Sunshine

In December, the average sunshine is 5h.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: In December, the UV index of 2 transforms into the following advice:
Most individuals face no major issues with lengthy exposure to the sun, but children, infants, and individuals with fair skin always require protection. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
Updated: Aug 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is it in December?

In Cookstown, 44.2°F (6.8°C) is the average high-temperature and 32.7°F (0.4°C) is the average low-temperature during December. In August, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which combines air temperature and relative humidity, is calculated to be 89.6°F (32°C).

What is the average humidity in December?

The average relative humidity in December is 78%.

What is the wettest month?

The month with the most rainfall is December, when the rain falls for 10.9 days and typically aggregates up to 3.7" (94mm) of precipitation.

How many days does it rain in December?

In Cookstown, in December, it is raining for 10.9 days, with typically 3.7" (94mm) of accumulated precipitation.

How much does it snow in December?

In December, it is snowing for 3.6 days. Throughout December, 1.5" (38mm) of snow is accumulated.

What is the month with the shortest days?

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

How many hours of daylight does Cookstown have in December?

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

What time are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 7:01 am and sunset at 4:33 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 4:43 pm EST.

How long on average sun shines in December?

In December, the average sunshine duration is 5h.

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 in Cookstown?

The average daily maximum UV index in December is 2. A UV Index estimate 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
Cookstown, NJ

Average temperature in December - Cookstown, NJ
  • Average high temperature in December: 44.2°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 (37.8°F).

  • Average low temperature in December: 32.7°F

The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (25.2°F).

Average pressure in December
Cookstown, NJ

Average pressure in December - Cookstown, 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 (29.93"Hg).

Average wind speed in December
Cookstown, NJ

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

The windiest month (with the highest average wind speed) is March (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).

Average humidity in December
Cookstown, NJ

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

The month with the highest relative humidity is October (79%).
The month with the lowest relative humidity is April (73%).

Average rainfall in December
Cookstown, NJ

Average rainfall in December - Cookstown, NJ
  • Average rainfall in December: 3.7"

The wettest month (with the highest rainfall) is December (3.7").
The driest month (with the least rainfall) is September (1.89").

Average rainfall days in December
Cookstown, NJ

Average rainfall days in December - Cookstown, NJ
  • Average rainfall days in December: 10.9 days

The months with the highest number of rainy days are May and July (17 days).
The month with the least rainy days is November (9 days).

Average snowfall in December
Cookstown, NJ

Average snowfall in December - Cookstown, NJ
  • Average snowfall in December: 1.5"

The month with the highest snowfall is March (3.54").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Cookstown, NJ

Average snowfall days in December - Cookstown, NJ
  • Average snowfall days in December: 3.6 days

The month with the highest number of snowfall days is January (5.9 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Cookstown, 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 0min

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).

Average sunshine days in December
Cookstown, NJ

Average sunshine days in December - Cookstown, NJ
  • Average sunshine days in December: 17.5 days

The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is July (11.8 days).

Average UV index in December
Cookstown, NJ

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

Average cloud cover in December
Cookstown, NJ

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

The month with the most cloud cover is February (Cloud cover 49).
The months with the least cloud cover are July and August (Cloud cover 33).

Average visibility in December
Cookstown, NJ

Average visibility in December - Cookstown, 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).

Cookstown, New Jersey, USA

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