December weather forecast
Clifton, NJ

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Weather in December

Concluding the year, the last month is truly a winter month for the citizens of Clifton, New Jersey. December takes temperatures to as low as 31.1°F (-0.5°C), signifying a distinct switch from the preceding month. As the daylight hours continue to decrease, the city gets engulfed in a longer duration of darkness. With the highest rainfall across the year, December stands as the wettest month. The weather in December signifies the onset of the cold and snowy winter season, which the city will continue to experience in the upcoming months.

Temperature

December in Clifton brings a decrease in the average high-temperature, falling from November's cool 50.9°F (10.5°C) to an icy 41.7°F (5.4°C). In Clifton, the average nighttime temperature during December is a freezing cold 31.1°F (-0.5°C).

Humidity

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

Rainfall

The month with the most rainfall is December, when the rain falls for 11.5 days and typically aggregates up to 3.5" (89mm) of precipitation.

Snowfall

January through April, October through December are months with snowfall in Clifton. In Clifton, in December, snow falls for 3.7 days, with typically accumulated 1.81" (46mm) of snow. In Clifton, New Jersey, during the entire year, snow falls for 25.7 days and aggregates up to 11.97" (304mm) 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 the month, sunrise is at 7:02 am and sunset at 4:29 pm. On the last day of December, in Clifton, sunrise is at 7:20 am and sunset at 4:38 pm EST.

Sunshine

In Clifton, the average sunshine in December 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 minimal health vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: In December, a daily UV index of 2 turns into the following recommendations:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. Avoiding the Sun during its peak radiation time around midday is a healthy practice. To cut down UV radiation exposure by about half, sport a wide-brim hat. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
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Frequently asked questions

How cold does it get in Clifton in December?

In December, the average high-temperature and low-temperature in Clifton are 41.7°F (5.4°C) and 31.1°F (-0.5°C) respectively. In August, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which represents the influence of relative humidity on air temperature, is estimated at 86°F (30°C).

What is the most humid month in Clifton?

The months with the highest humidity in Clifton, New Jersey, are February and December, with an average relative humidity of 77%.

What is the average humidity in December in Clifton?

In Clifton, New Jersey, the average relative humidity in December is 77%.

What is the rainiest month in Clifton?

December is the month with the most rainfall in Clifton, New Jersey. Rain falls for 11.5 days and accumulates 3.5" (89mm) of precipitation.

How much does it rain in Clifton in December?

In Clifton, in December, during 11.5 rainfall days, 3.5" (89mm) of precipitation is typically accumulated.

How much does it snow in Clifton in December?

In Clifton, in December, during 3.7 snowfall days, 1.81" (46mm) of snow is typically accumulated.

What is the month with the shortest days in Clifton?

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

How many hours of daylight does Clifton have in December?

In December, the average day length is 9h and 18min.

What time are sunrise and sunset in December in Clifton?

In December, on the first day of the month, sunrise is at 7:02 am and sunset at 4:29 pm. On the last day of the month, in Clifton, sunrise is at 7:20 am and sunset at 4:38 pm EST.

How many hours of sunshine does Clifton have in December?

In Clifton, the average sunshine duration in December is 4.9h.

What is the month with the lowest UV index in Clifton?

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 Clifton?

In Clifton, New Jersey, 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 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
Clifton, NJ

Average temperature in December - Clifton, NJ
  • Average high temperature in December: 41.7°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 (35.4°F).

  • Average low temperature in December: 31.1°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 (23.9°F).

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Average pressure in December
Clifton, NJ

Average pressure in December - Clifton, NJ
  • Average pressure in December: 30.07"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).

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Average wind speed in December
Clifton, NJ

Average wind speed in December - Clifton, NJ
  • Average wind speed in December: 8.1mph

The windiest months (with the highest average wind speed) are January and March (8.7mph).
The calmest month (with the lowest average wind speed) is July (5.7mph).

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Average humidity in December
Clifton, NJ

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

The months with the highest relative humidity are February and December (77%).
The month with the lowest relative humidity is August (71%).

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Average rainfall in December
Clifton, NJ

Average rainfall in December - Clifton, NJ
  • Average rainfall in December: 3.5"

The wettest month (with the highest rainfall) is December (3.5").
The driest month (with the least rainfall) is September (2.05").

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Average rainfall days in December
Clifton, NJ

Average rainfall days in December - Clifton, NJ
  • Average rainfall days in December: 11.5 days

The month with the highest number of rainy days is July (17.5 days).
The month with the least rainy days is January (9 days).

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Average snowfall in December
Clifton, NJ

Average snowfall in December - Clifton, NJ
  • Average snowfall in December: 1.81"

The months with the highest snowfall are February and March (3.58").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in December
Clifton, NJ

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

The month with the highest number of snowfall days is February (7.7 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Clifton, NJ
  • Average daylight in December: 9h and 2min

The month with the longest days is June (Average daylight: 15h and 6min).
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).

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Average sunshine days in December
Clifton, NJ

Average sunshine days in December - Clifton, NJ
  • Average sunshine days in December: 16.7 days

The month with the most sunshine days is November (18.2 days).
The month with the least sunshine days is June (10.8 days).

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Average UV index in December
Clifton, NJ

Average UV index in December - Clifton, 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).

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Average cloud cover in December
Clifton, NJ

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

The months with the most cloud cover are February, March and December (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 31).

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Average visibility in December
Clifton, NJ

Average visibility in December - Clifton, 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).

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Clifton, New Jersey, USA

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