December weather forecast
Spotswood, NJ

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Weather in December

December, the first month of the winter in Spotswood, is still a chilly month, with an average temperature varying between 32.7°F (0.4°C) and 43.2°F (6.2°C).

Temperature

December witnesses a gentle descent in average high-temperature, descending from November's fresh 52°F (11.1°C) to a chilly 43.2°F (6.2°C). In December, the temperature drops to an average of 32.7°F (0.4°C) at night.

Humidity

The months with the highest humidity are February, May, October and December, with an average relative humidity of 77%.

Rainfall

In Spotswood, during December, the rain falls for 6.5 days and regularly aggregates up to 0.79" (20mm) of precipitation. Throughout the year, there are 92.9 rainfall days, and 7.32" (186mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through March, November and December. In Spotswood, during December, snow falls for 2.2 days and regularly aggregates up to 0.35" (9mm) of snow. In Spotswood, during the entire year, snow falls for 12.7 days and aggregates up to 1.5" (38mm) of snow.

Daylight

With an average of 9h and 18min of daylight, December has the shortest days of the year.
On the first day of December, 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 December, the average sunshine is 4.9h.

UV index

The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The UV index of 2 during December translates into the following guidance:
Extended exposure to the sun should always be avoided by children, infants, and those with sensitive skin. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.

Frequently asked questions

How cold is it in December?

The average high-temperature, in December, in Spotswood, is 43.2°F (6.2°C), while the average low-temperature is 32.7°F (0.4°C). In August, the average heat index (a.k.a. 'apparent temperature', 'feels like'), which factors the actual air temperature with the relative humidity, is appraised at 87.8°F (31°C).

What is the most humid month?

February, May, October and December, with an average relative humidity of 77%, are most humid months.

What is the average humidity in December?

The average relative humidity in December in Spotswood is 77%.

How much does it rain in December?

In Spotswood, in December, it is raining for 6.5 days, with typically 0.79" (20mm) of accumulated precipitation.

How much does it snow in Spotswood in December?

In Spotswood, in December, during 2.2 snowfall days, 0.35" (9mm) of snow is typically accumulated.

What is the month with the shortest days?

The month with the shortest days is December, with an average of 9h and 18min of daylight.

How many hours of daylight does Spotswood have in December?

In December, the average day length in Spotswood is 9h and 21min.

When are sunrise and sunset in December in Spotswood?

In December, on the first day of the month, 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 long on average sun shines in December?

The average sunshine duration in December is 4.9h.

When is the lowest UV index in Spotswood?

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

What is the UV index intensity in December?

In Spotswood, the average daily maximum UV index in December is 2. A UV Index of 2, and less, symbolizes a low health threat from exposure to the Sun's 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
Spotswood, NJ

Average temperature in December - Spotswood, NJ
  • Average high temperature in December: 43.2°F

The warmest month (with the highest average high temperature) is July (84.2°F).
The month with the lowest average high temperature is January (37°F).

  • Average low temperature in December: 32.7°F

The month with the highest average low temperature is July (68°F).
The coldest month (with the lowest average low temperature) is January (25°F).

Average pressure in December
Spotswood, NJ

Average pressure in December - Spotswood, 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
Spotswood, NJ

Average wind speed in December - Spotswood, NJ
  • Average wind speed in December: 8.5mph

The windiest month (with the highest average wind speed) is March (9.3mph).
The calmest month (with the lowest average wind speed) is August (5.9mph).

Average humidity in December
Spotswood, NJ

Average humidity in December - Spotswood, NJ
  • Average humidity in December: 77%

The months with the highest relative humidity are February, May, October and December (77%).
The months with the lowest relative humidity are April and August (73%).

Average rainfall in December
Spotswood, NJ

Average rainfall in December - Spotswood, NJ
  • Average rainfall in December: 0.79"

The wettest month (with the highest rainfall) is July (0.94").
The driest month (with the least rainfall) is September (0.28").

Average rainfall days in December
Spotswood, NJ

Average rainfall days in December - Spotswood, NJ
  • Average rainfall days in December: 6.5 days

The month with the highest number of rainy days is July (10.7 days).
The months with the least rainy days are January and November (4.8 days).

Average snowfall in December
Spotswood, NJ

Average snowfall in December - Spotswood, NJ
  • Average snowfall in December: 0.35"

The month with the highest snowfall is March (0.51").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in December
Spotswood, NJ

Average snowfall days in December - Spotswood, NJ
  • Average snowfall days in December: 2.2 days

The month with the highest number of snowfall days is February (3.8 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
Spotswood, NJ

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

Average sunshine days in December - Spotswood, NJ
  • Average sunshine days in December: 23 days

The month with the most sunshine days is January (24.2 days).
The month with the least sunshine days is July (15.7 days).

Average UV index in December
Spotswood, NJ

Average UV index in December - Spotswood, 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
Spotswood, NJ

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

The months with the most cloud cover are February, March and December (Cloud cover 48).
The months with the least cloud cover are July and August (Cloud cover 32).

Average visibility in December
Spotswood, NJ

Average visibility in December - Spotswood, 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).

Spotswood, New Jersey, USA

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