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
Green Island's December weather shows a modest shift in high-temperatures, falling from November's fresh 52.7°F (11.5°C) to a frosty 44.4°F (6.9°C). During the nights of December, Green Island maintains an almost steady temperature with an average low of 36.1°F (2.3°C).Humidity
In Green Island, the average relative humidity in December is 76%.Rainfall
In December, in Green Island, the rain falls for 10 days. Throughout December, 1.69" (43mm) of precipitation is accumulated. Throughout the year, there are 137.7 rainfall days, and 19.09" (485mm) of precipitation is accumulated.Snowfall
January through March, November and December are months with snowfall. In December, in Green Island, it is snowing for 2.4 days. Throughout December, 0.79" (20mm) of snow is accumulated. In Green Island, New Jersey, during the entire year, snow falls for 13.8 days and aggregates up to 3.27" (83mm) of snow.Daylight
With an average of 9h and 24min of daylight, December has the shortest days of the year.On the first day of December in Green Island, sunrise is at 6:59 am and sunset at 4:31 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 4:41 pm EST.
Sunshine
In Green Island, New Jersey, the average sunshine in December 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 of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: The daily maximum UV index of 2 in December interprets into the following advice:
Long-term sun exposure is typically not a concern for most. However, those with sensitive skin, infants, and children must always have protection. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
Frequently asked questions
How cold does it get in Green Island in December?
What is the average humidity in December in Green Island?
How much does it rain in Green Island in December?
How much does it snow in Green Island in December?
What is the month with the shortest days in Green Island?
What is the average length of the day in December in Green Island?
When is the sunrise / sunset in December in Green Island?
How long on average sun shines in December in Green Island?
What are the months with the lowest UV index in Green Island?
What is the UV index intensity in December in Green Island?
Average temperature in December
Green Island, NJ
- Average high temperature in December: 44.4°F
The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (38.8°F).
- Average low temperature in December: 36.1°F
The month with the highest average low temperature is July (70.9°F).
The coldest month (with the lowest average low temperature) is January (29.1°F).
Average pressure in December
Green Island, 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
Green Island, NJ
- Average wind speed in December: 11.5mph
The windiest month (with the highest average wind speed) is January (12.2mph).
The calmest month (with the lowest average wind speed) is July (8mph).
Average humidity in December
Green Island, NJ
- Average humidity in December: 76%
The months with the highest relative humidity are May and June (80%).
The months with the lowest relative humidity are January, March and November (74%).
Average rainfall in December
Green Island, NJ
- Average rainfall in December: 1.69"
The wettest month (with the highest rainfall) is July (2.56").
The driest month (with the least rainfall) is January (0.94").
Average rainfall days in December
Green Island, NJ
- Average rainfall days in December: 10 days
The month with the highest number of rainy days is July (16.1 days).
The month with the least rainy days is January (7 days).
Average snowfall in December
Green Island, NJ
- Average snowfall in December: 0.79"
The month with the highest snowfall is January (0.91").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Green Island, NJ
- Average snowfall days in December: 2.4 days
The month with the highest number of snowfall days is January (4.4 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
Green Island, 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: 5h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).
Average sunshine days in December
Green Island, NJ
- Average sunshine days in December: 18.6 days
The month with the most sunshine days is January (20.2 days).
The month with the least sunshine days is July (11.9 days).
Average UV index in December
Green Island, 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
Green Island, 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
Green Island, 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).
Green Island, New Jersey, USA
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