December weather forecastSwedesboro, NJ
December
Weather in December
December, the first month of the winter in Swedesboro, is also a frosty month, with temperature in the range of an average high of 44.1°F (6.7°C) and an average low of 33.1°F (0.6°C).Temperature
Swedesboro's progression into December involves a drop in the average high-temperature, receding from a fresh 53.2°F (11.8°C) in November to a frosty 44.1°F (6.7°C). An average nighttime temperature of 33.1°F (0.6°C) is recorded during December.Humidity
May, September, October and December, with an average relative humidity of 77%, are the most humid months.Rainfall
In December, in Swedesboro, the rain falls for 8 days. Throughout December, 1.14" (29mm) of precipitation is accumulated. In Swedesboro, during the entire year, the rain falls for 121 days and collects up to 11.54" (293mm) of precipitation.Snowfall
January through April, November and December are months with snowfall. In Swedesboro, in December, snow falls for 2 days, with typically accumulated 0.47" (12mm) of snow. Throughout the year, there are 12.3 snowfall days, and 3.07" (78mm) of snow is accumulated.Daylight
With an average of 9h and 24min of daylight, December has the shortest days of the year in Swedesboro.On the first day of the month, sunrise is at 7:03 am and sunset at 4:37 pm. On the last day of December, in Swedesboro, sunrise is at 7:22 am and sunset at 4:46 pm EST.
Sunshine
In Swedesboro, the average sunshine in December is 5.2h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Swedesboro, New Jersey. A UV Index value of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for average individuals.Note: In December, the UV index of 2 transforms into the following advice:
While most people can stay under the sun for an hour without burning, children must always be guarded against sun exposure. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Swedesboro, NJ
- Average high temperature in December: 44.1°F
The warmest month (with the highest average high temperature) is July (85.1°F).
The month with the lowest average high temperature is January (37.8°F).
- Average low temperature in December: 33.1°F
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).
Average pressure in December
Swedesboro, NJ
- Average pressure in December: 30.09"Hg
The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in December
Swedesboro, NJ
- Average wind speed in December: 8mph
The windiest month (with the highest average wind speed) is March (8.7mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).
Average humidity in December
Swedesboro, NJ
- Average humidity in December: 77%
The months with the highest relative humidity are May, September, October and December (77%).
The month with the lowest relative humidity is April (72%).
Average rainfall in December
Swedesboro, NJ
- Average rainfall in December: 1.14"
The wettest month (with the highest rainfall) is August (1.42").
The driest month (with the least rainfall) is January (0.63").
Average rainfall days in December
Swedesboro, NJ
- Average rainfall days in December: 8 days
The month with the highest number of rainy days is July (14.2 days).
The month with the least rainy days is November (6.6 days).
Average snowfall in December
Swedesboro, NJ
- Average snowfall in December: 0.47"
The month with the highest snowfall is January (0.87").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Swedesboro, NJ
- Average snowfall days in December: 2 days
The month with the highest number of snowfall days is January (3.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Swedesboro, NJ
- Average daylight in December: 9h and 24min
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 24min).
- Average sunshine in December: 5h and 12min
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
Swedesboro, NJ
- Average sunshine days in December: 20.7 days
The month with the most sunshine days is November (21.6 days).
The month with the least sunshine days is July (13.5 days).
Average UV index in December
Swedesboro, 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, November and December (UV index 2).
Average cloud cover in December
Swedesboro, NJ
- Average cloud cover in December: 45
The months with the most cloud cover are February and March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 29).
Average visibility in December
Swedesboro, 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).
