Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
As December commences, the average high-temperature shows a reduction, transitioning from a fresh 50.9°F (10.5°C) in November to a wintry 41.7°F (5.4°C). During December, the temperature tends to dip to an average of 31.1°F (-0.5°C) at night.Humidity
February and December, with an average relative humidity of 77%, are the most humid months.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
Months with snowfall are January through April, October through December. In Clifton, New Jersey, in December, during 3.7 snowfall days, 1.81" (46mm) of snow is typically accumulated. Throughout the year, there are 25.7 snowfall days, and 11.97" (304mm) of snow is accumulated.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 7:02 am and sunset at 4:29 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 4:38 pm EST.
Sunshine
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 value of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV rays for the average person.Note: A maximum daily UV index of 2 during December morphs into the following directions:
Many can withstand an hour in the sun without burning, yet children must always have protection against sunlight. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is December cold?
What are the most humid months?
What is the average humidity in December?
What is the rainiest month?
How much does it rain in December?
How many days does it snow in December?
What is the month with the shortest days in Clifton?
How many hours of daylight does Clifton have in December?
When are sunrise and sunset in December in Clifton?
How many hours of sunshine does Clifton have in December?
What is the month with the lowest UV index?
How high is the UV index in December?
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).
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).
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).
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%).
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").
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).
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").
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).
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).
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).
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).
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).
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).
Clifton, New Jersey, USA
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