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
December suggests a modest reduction in the average high-temperature, shifting from a cool 50.5°F (10.3°C) in November to an icy 40.8°F (4.9°C). In North Caldwell, the expected average low-temperature for December is a subzero cold 30.4°F (-0.9°C).Humidity
The months with the highest humidity in North Caldwell, New Jersey, are February and December, with an average relative humidity of 79%.Rainfall
In North Caldwell, New Jersey, during December, the rain falls for 10.1 days and regularly aggregates up to 2.48" (63mm) of precipitation. In North Caldwell, during the entire year, the rain falls for 158 days and collects up to 27.4" (696mm) of precipitation.Snowfall
Months with snowfall in North Caldwell are January through May, November and December. In North Caldwell, in December, snow falls for 4.4 days, with typically accumulated 1.18" (30mm) of snow. Throughout the year, there are 24.3 snowfall days, and 9.96" (253mm) of snow is accumulated.Daylight
December has the shortest days of the year in North Caldwell, with an average of 9h and 18min of daylight.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 North Caldwell, sunrise is at 7:21 am and sunset at 4:39 pm EST.
Sunshine
The average sunshine in December is 4.8h.UV index
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in North Caldwell. A UV Index value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for average individuals.Note: The maximum daily UV index of 2 in December converts into the following recommendations:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.
Frequently asked questions
Is it cold in North Caldwell during December?
What is the most humid month in North Caldwell?
What is the average humidity in December in North Caldwell?
How much does it rain in North Caldwell in December?
How much does it snow in North Caldwell in December?
What is the month with the shortest days in North Caldwell?
How many hours of daylight does North Caldwell have in December?
When is the sunrise / sunset in December in North Caldwell?
How many hours of sunshine does North Caldwell have in December?
When is the lowest UV index in North Caldwell?
How high is the UV index in December in North Caldwell?
Average temperature in December
North Caldwell, NJ
- Average high temperature in December: 40.8°F
The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (34.9°F).
- Average low temperature in December: 30.4°F
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (22.6°F).
Average pressure in December
North Caldwell, 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
North Caldwell, NJ
- Average wind speed in December: 7.7mph
The windiest month (with the highest average wind speed) is March (8.5mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).
Average humidity in December
North Caldwell, NJ
- Average humidity in December: 79%
The months with the highest relative humidity are February and December (79%).
The months with the lowest relative humidity are April and August (73%).
Average rainfall in December
North Caldwell, NJ
- Average rainfall in December: 2.48"
The wettest month (with the highest rainfall) is July (3.15").
The driest month (with the least rainfall) is January (1.57").
Average rainfall days in December
North Caldwell, NJ
- Average rainfall days in December: 10.1 days
The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is January (7.8 days).
Average snowfall in December
North Caldwell, NJ
- Average snowfall in December: 1.18"
The month with the highest snowfall is March (3.58").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in December
North Caldwell, NJ
- Average snowfall days in December: 4.4 days
The month with the highest number of snowfall days is February (7 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
North Caldwell, 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 24min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in December
North Caldwell, NJ
- Average sunshine days in December: 17.4 days
The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is July (10.7 days).
Average UV index in December
North Caldwell, 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
North Caldwell, NJ
- Average cloud cover in December: 48
The months with the most cloud cover are February and March (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in December
North Caldwell, 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).
North Caldwell, New Jersey, USA
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