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
December
Weather in December
Temperature
A change in temperatures is noted as November gives way to December, with average highs reducing from a fresh 52°F (11.1°C) to a frosty 43°F (6.1°C). New Brunswick's temperature lowers to a mean of 31.8°F (-0.1°C) during the nights in December.Humidity
February, October and December, with an average relative humidity of 77%, are the most humid months in New Brunswick.Rainfall
In December, in New Brunswick, the rain falls for 10.2 days. Throughout December, 2.83" (72mm) of precipitation is accumulated. Throughout the year, there are 149.4 rainfall days, and 28.43" (722mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, November and December. In New Brunswick, in December, during 2.9 snowfall days, 1.02" (26mm) of snow is typically accumulated. Throughout the year, there are 18.3 snowfall days, and 8.46" (215mm) of snow is accumulated.Daylight
December has the shortest days of the year in New Brunswick, 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 4:31 pm. On the last day of December, sunrise is at 7:20 am and sunset at 4:41 pm EST.
Sunshine
In New Brunswick, the average sunshine in December is 4.8h.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 hazard from unsafe exposure to UV radiation for the average person.Note: A maximum daily UV index of 2 during December morphs into the following directions:
Babies, children, and those with sensitive skin should always avoid extended periods in the sun. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is December cold?
What are the most humid months in New Brunswick?
What is the average humidity in December?
How much does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
How many hours of daylight does New Brunswick have in December?
When is the sunrise / sunset in December?
How many hours of sunshine does New Brunswick have in December?
What are the months with the lowest UV index?
What is the UV index reading in December in New Brunswick?
Average temperature in December
New Brunswick, NJ
- Average high temperature in December: 43°F
The warmest month (with the highest average high temperature) is July (84.6°F).
The month with the lowest average high temperature is January (36.7°F).
- Average low temperature in December: 31.8°F
The month with the highest average low temperature is July (68.2°F).
The coldest month (with the lowest average low temperature) is January (24.6°F).
Average pressure in December
New Brunswick, 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
New Brunswick, NJ
- Average wind speed in December: 8.3mph
The windiest month (with the highest average wind speed) is March (9.1mph).
The calmest months (with the lowest average wind speed) are July and August (5.9mph).
Average humidity in December
New Brunswick, NJ
- Average humidity in December: 77%
The months with the highest relative humidity are February, October and December (77%).
The months with the lowest relative humidity are April and August (72%).
Average rainfall in December
New Brunswick, NJ
- Average rainfall in December: 2.83"
The wettest month (with the highest rainfall) is July (3.27").
The driest month (with the least rainfall) is September (1.61").
Average rainfall days in December
New Brunswick, NJ
- Average rainfall days in December: 10.2 days
The month with the highest number of rainy days is July (16.6 days).
The month with the least rainy days is January (7.9 days).
Average snowfall in December
New Brunswick, NJ
- Average snowfall in December: 1.02"
The month with the highest snowfall is March (3.5").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in December
New Brunswick, NJ
- Average snowfall days in December: 2.9 days
The month with the highest number of snowfall days is January (5.4 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
New Brunswick, 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 24min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in December
New Brunswick, NJ
- Average sunshine days in December: 18.5 days
The month with the most sunshine days is November (19.9 days).
The month with the least sunshine days is July (11.1 days).
Average UV index in December
New Brunswick, 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
New Brunswick, NJ
- Average cloud cover in December: 49
The months with the most cloud cover are February, March and December (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 33).
Average visibility in December
New Brunswick, 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).