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
In Rossmoor, entering December brings a subtle temperature decrement, reducing from November's fresh 52°F (11.1°C) to a chilly 43.2°F (6.2°C). During the nights in December, Rossmoor experiences a consistent average temperature of 32.7°F (0.4°C).Humidity
The months with the highest humidity in Rossmoor are February, May, October and December, with an average relative humidity of 77%.Rainfall
In Rossmoor, New Jersey, during December, the rain falls for 6.5 days and regularly aggregates up to 0.79" (20mm) of precipitation. Throughout the year, there are 92.9 rainfall days, and 7.32" (186mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through March, November and December. In Rossmoor, in December, snow falls for 2.2 days, with typically accumulated 0.35" (9mm) of snow. Throughout the year, in Rossmoor, there are 12.7 snowfall days, and 1.5" (38mm) of snow is accumulated.Daylight
December has the shortest days of the year in Rossmoor, with an average of 9h and 24min of daylight.On the first day of the month, sunrise is at 7:02 am and sunset at 4:32 pm. On the last day of December, in Rossmoor, sunrise is at 7:20 am and sunset at 4:41 pm EST.
Sunshine
The average sunshine in December in Rossmoor is 4.9h.UV index
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum daily UV index of 2 during December translates into the following directions:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
Frequently asked questions
Is December cold in Rossmoor?
What is the most humid month in Rossmoor?
What is the average humidity in December in Rossmoor?
How much does it rain in Rossmoor in December?
How much does it snow in Rossmoor in December?
What is the month with the shortest days in Rossmoor?
How many hours of daylight does Rossmoor have in December?
When are sunrise and sunset in December in Rossmoor?
How many hours of sunshine does Rossmoor have in December?
What is the month with the lowest UV index in Rossmoor?
How high is the UV index in December in Rossmoor?
Average temperature in December
Rossmoor, NJ
- Average high temperature in December: 43.2°F
The warmest month (with the highest average high temperature) is July (84.2°F).
The month with the lowest average high temperature is January (37°F).
- Average low temperature in December: 32.7°F
The month with the highest average low temperature is July (68°F).
The coldest month (with the lowest average low temperature) is January (25°F).
Average pressure in December
Rossmoor, 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
Rossmoor, NJ
- Average wind speed in December: 8.5mph
The windiest month (with the highest average wind speed) is March (9.3mph).
The calmest month (with the lowest average wind speed) is August (5.9mph).
Average humidity in December
Rossmoor, NJ
- Average humidity in December: 77%
The months with the highest relative humidity are February, May, October and December (77%).
The months with the lowest relative humidity are April and August (73%).
Average rainfall in December
Rossmoor, NJ
- Average rainfall in December: 0.79"
The wettest month (with the highest rainfall) is July (0.94").
The driest month (with the least rainfall) is September (0.28").
Average rainfall days in December
Rossmoor, NJ
- Average rainfall days in December: 6.5 days
The month with the highest number of rainy days is July (10.7 days).
The months with the least rainy days are January and November (4.8 days).
Average snowfall in December
Rossmoor, NJ
- Average snowfall in December: 0.35"
The month with the highest snowfall is March (0.51").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Rossmoor, NJ
- Average snowfall days in December: 2.2 days
The month with the highest number of snowfall days is February (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
Rossmoor, 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 24min).
- Average sunshine in December: 4h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in December
Rossmoor, NJ
- Average sunshine days in December: 23 days
The month with the most sunshine days is January (24.2 days).
The month with the least sunshine days is July (15.7 days).
Average UV index in December
Rossmoor, 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
Rossmoor, NJ
- Average cloud cover in December: 48
The months with the most cloud cover are February, March and December (Cloud cover 48).
The months with the least cloud cover are July and August (Cloud cover 32).
Average visibility in December
Rossmoor, 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).
Rossmoor, New Jersey, USA
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