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
Woodcliff Lake's progression into December involves a drop in the average high-temperature, receding from a cool 50.7°F (10.4°C) in November to a wintry 40.8°F (4.9°C). During December, the average low-temperature is a freezing cold 30.4°F (-0.9°C).Humidity
The months with the highest humidity in Woodcliff Lake are February and December, with an average relative humidity of 78%.Rainfall
December is the month with the most rainfall. Rain falls for 10.6 days and accumulates 3.58" (91mm) of precipitation.Snowfall
Months with snowfall in Woodcliff Lake are January through April, October through December. In Woodcliff Lake, in December, snow falls for 4.5 days, with typically accumulated 2.05" (52mm) of snow. In Woodcliff Lake, during the entire year, snow falls for 28 days and aggregates up to 13.82" (351mm) of snow.Daylight
The month with the shortest days in Woodcliff Lake is December, with an average of 9h and 18min of daylight.On the first day of December in Woodcliff Lake, New Jersey, sunrise is at 7:02 am and sunset at 4:28 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 4:38 pm EST.
Sunshine
The average sunshine in December is 4.7h.UV index
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Woodcliff Lake. A UV Index estimate of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum UV index, 2 during December, leads to the following recommendations:
Long-term sun exposure is typically not a concern for most. However, those with sensitive skin, infants, and children must always have protection. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
Frequently asked questions
How cold is December in Woodcliff Lake?
What are the most humid months in Woodcliff Lake?
What is the average humidity in December in Woodcliff Lake?
What is the rainiest month in Woodcliff Lake?
How many days does it rain in December in Woodcliff Lake?
How much does it snow in Woodcliff Lake in December?
What is the month with the shortest days in Woodcliff Lake?
What is the average length of the day in December in Woodcliff Lake?
When is the sunrise / sunset in December in Woodcliff Lake?
How long on average sun shines in December in Woodcliff Lake?
When is the lowest UV index in Woodcliff Lake?
What is the UV index intensity in December in Woodcliff Lake?
Average temperature in December
Woodcliff Lake, NJ
- Average high temperature in December: 40.8°F
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (35.2°F).
- Average low temperature in December: 30.4°F
The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (22.8°F).
Average pressure in December
Woodcliff Lake, NJ
- Average pressure in December: 30.07"Hg
The month with the highest atmospheric pressure is November (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Woodcliff Lake, NJ
- Average wind speed in December: 7.3mph
The windiest month (with the highest average wind speed) is March (8mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).
Average humidity in December
Woodcliff Lake, NJ
- Average humidity in December: 78%
The months with the highest relative humidity are February and December (78%).
The month with the lowest relative humidity is August (70%).
Average rainfall in December
Woodcliff Lake, NJ
- Average rainfall in December: 3.58"
The wettest month (with the highest rainfall) is December (3.58").
The driest month (with the least rainfall) is September (1.89").
Average rainfall days in December
Woodcliff Lake, NJ
- Average rainfall days in December: 10.6 days
The months with the highest number of rainy days are May and July (16.8 days).
The month with the least rainy days is January (8.4 days).
Average snowfall in December
Woodcliff Lake, NJ
- Average snowfall in December: 2.05"
The month with the highest snowfall is February (4.09").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Woodcliff Lake, NJ
- Average snowfall days in December: 4.5 days
The month with the highest number of snowfall days is February (7.9 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
Woodcliff Lake, 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 4min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).
Average sunshine days in December
Woodcliff Lake, NJ
- Average sunshine days in December: 16.7 days
The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is June (11.5 days).
Average UV index in December
Woodcliff Lake, 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
Woodcliff Lake, NJ
- Average cloud cover in December: 49
The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in December
Woodcliff Lake, NJ
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
Woodcliff Lake, New Jersey, USA
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