December weather forecastFair Haven, NJ
December
Weather in December
The first month of the winter, December, is also a frosty month in Fair Haven, New Jersey, with an average temperature fluctuating between 36°F (2.2°C) and 44.2°F (6.8°C).Temperature
The shift from November to December includes a small decrease in the average high-temperature, from a cool 52.3°F (11.3°C) to a frosty 44.2°F (6.8°C). Fair Haven notes an average temperature descent to an icy 36°F (2.2°C) in December, a small shift from its daytime peak.Humidity
In Fair Haven, the average relative humidity in December is 75%.Rainfall
In Fair Haven, during December, the rain falls for 9.2 days and regularly aggregates up to 1.18" (30mm) of precipitation. Throughout the year, there are 125.1 rainfall days, and 12.64" (321mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through March, October and December. The month with the most snowfall is December, when snow falls for 3.3 days and typically aggregates up to 0.47" (12mm) of snow.Ocean temperature
In December, the average ocean temperature is 48°F (8.9°C).Note: With an efficient thermal swimsuit, one can navigate 48°F (8.9°C) even if it's colder than 50°F (10°C); otherwise, rapid cold shock and breathlessness might set in. Barely wading at 55.4°F (13°C) feels chilly.
Daylight
December has the shortest days of the year in Fair Haven, with an average of 9h and 24min of daylight.On the first day of December, sunrise is at 7:00 am and sunset at 4:30 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 4:39 pm EST.
Sunshine
In December, the average sunshine is 5.1h.UV index
The months with the lowest UV index are January, February, 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 unprotected exposure to Sun's UV rays for the average person.Note: The maximum daily UV index of 2 during December translates into the following directions:
Extended sunlight exposure does not pose significant problems for most people, except for children, infants, and people with fair skin who always need shielding. To protect against the Sun's most potent rays, avoid direct exposure around midday. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Fair Haven, NJ
- Average high temperature in December: 44.2°F
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (37.9°F).
- Average low temperature in December: 36°F
The month with the highest average low temperature is July (71.2°F).
The coldest month (with the lowest average low temperature) is January (28.8°F).
Average pressure in December
Fair Haven, 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
Fair Haven, NJ
- Average wind speed in December: 11.7mph
The windiest month (with the highest average wind speed) is January (12.4mph).
The calmest month (with the lowest average wind speed) is July (7.9mph).
Average humidity in December
Fair Haven, NJ
- Average humidity in December: 75%
The months with the highest relative humidity are May and June (79%).
The month with the lowest relative humidity is November (73%).
Average rainfall in December
Fair Haven, NJ
- Average rainfall in December: 1.18"
The wettest month (with the highest rainfall) is July (1.61").
The driest month (with the least rainfall) is January (0.63").
Average rainfall days in December
Fair Haven, NJ
- Average rainfall days in December: 9.2 days
The month with the highest number of rainy days is July (15.1 days).
The month with the least rainy days is January (6.5 days).
Average snowfall in December
Fair Haven, NJ
- Average snowfall in December: 0.47"
The month with the highest snowfall is December (0.47").
The months with the least snowfall are April, May, June, July, August, September and November (0").
Average snowfall days in December
Fair Haven, NJ
- Average snowfall days in December: 3.3 days
The month with the highest number of snowfall days is January (3.9 days).
The months with the least snowfall days are April, May, June, July, August and September (0 days).
Average sea temperature in December
Fair Haven, NJ
- Average sea temperature in December: 48.1°F
The best month for swimming (with the highest average sea temperature) is August (74.8°F).
The coldest month (with the lowest average sea temperature) is February (40.4°F).
Average daylight in December /
Average sunshine in December
Fair Haven, NJ
- Average daylight in December: 9h and 24min
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 24min).
- Average sunshine in December: 5h and 6min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).
Average sunshine days in December
Fair Haven, NJ
- Average sunshine days in December: 19.1 days
The month with the most sunshine days is November (21.6 days).
The month with the least sunshine days is July (13 days).
Average UV index in December
Fair Haven, 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, November and December (UV index 2).
Average cloud cover in December
Fair Haven, NJ
- Average cloud cover in December: 46
The month with the most cloud cover is February (Cloud cover 47).
The months with the least cloud cover are July and August (Cloud cover 28).
Average visibility in December
Fair Haven, 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).
