December weather forecastSouth Seaville, NJ
December
Weather in December
The first month of the winter, December, is still a chilly month in South Seaville, New Jersey, with an average temperature fluctuating between 37.9°F (3.3°C) and 46°F (7.8°C).Temperature
The average high-temperature shows a slight dip in December, from November's cool 54.1°F (12.3°C) to a chilly 46°F (7.8°C). December witnesses a minor deviation from daytime peaks, with an average nighttime temperature of 37.9°F (3.3°C).Humidity
The average relative humidity in December is 76%.Rainfall
In South Seaville, in December, during 9.8 rainfall days, 1.06" (27mm) of precipitation is typically accumulated. In South Seaville, during the entire year, the rain falls for 130.8 days and collects up to 13.23" (336mm) of precipitation.Snowfall
Months with snowfall are January through March, November and December. In South Seaville, in December, snow falls for 2.5 days, with typically accumulated 0.47" (12mm) of snow. In South Seaville, during the entire year, snow falls for 13.2 days and aggregates up to 1.85" (47mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 30min of daylight.On the first day of the month, sunrise is at 7:00 am and sunset at 4:36 pm. On the last day of December, sunrise is at 7:18 am and sunset at 4:46 pm EST.
Sunshine
In December, the average sunshine is 5.2h.UV index
January, February and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: A maximum UV index of 2 in December translates into the following recommendations:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
South Seaville, NJ
- Average high temperature in December: 46°F
The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (40.1°F).
- Average low temperature in December: 37.9°F
The month with the highest average low temperature is July (72.1°F).
The coldest month (with the lowest average low temperature) is January (31.3°F).
Average pressure in December
South Seaville, NJ
- Average pressure in December: 30.09"Hg
The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in December
South Seaville, NJ
- Average wind speed in December: 11.4mph
The windiest month (with the highest average wind speed) is January (11.9mph).
The calmest months (with the lowest average wind speed) are July and August (8.1mph).
Average humidity in December
South Seaville, NJ
- Average humidity in December: 76%
The month with the highest relative humidity is May (81%).
The month with the lowest relative humidity is November (73%).
Average rainfall in December
South Seaville, NJ
- Average rainfall in December: 1.06"
The wettest month (with the highest rainfall) is August (1.61").
The driest month (with the least rainfall) is January (0.67").
Average rainfall days in December
South Seaville, NJ
- Average rainfall days in December: 9.8 days
The month with the highest number of rainy days is July (15.2 days).
The month with the least rainy days is January (7 days).
Average snowfall in December
South Seaville, NJ
- Average snowfall in December: 0.47"
The month with the highest snowfall is January (0.59").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
South Seaville, NJ
- Average snowfall days in December: 2.5 days
The month with the highest number of snowfall days is January (4.7 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
South Seaville, NJ
- Average daylight in December: 9h and 30min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in December: 5h and 12min
The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is February (Average sunshine: 5h and 0min).
Average sunshine days in December
South Seaville, NJ
- Average sunshine days in December: 18.1 days
The month with the most sunshine days is November (20.4 days).
The month with the least sunshine days is July (13.4 days).
Average UV index in December
South Seaville, 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 and December (UV index 2).
Average cloud cover in December
South Seaville, NJ
- Average cloud cover in December: 44
The month with the most cloud cover is February (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 25).
Average visibility in December
South Seaville, 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).
