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
As December arrives, Greenbriar's weather displays a minor decrease in high-temperatures, transitioning from November's fresh 52.7°F (11.5°C) to a chilly 44.4°F (6.9°C). The nighttime temperature in December experiences a minor dip, averaging an icy 36.1°F (2.3°C).Humidity
The average relative humidity in December is 76%.Rainfall
In Greenbriar, in December, it is raining for 10 days, with typically 1.69" (43mm) of accumulated precipitation. In Greenbriar, during the entire year, the rain falls for 137.7 days and collects up to 19.09" (485mm) of precipitation.Snowfall
January through March, November and December are months with snowfall. In Greenbriar, in December, snow falls for 2.4 days, with typically accumulated 0.79" (20mm) of snow. In Greenbriar, 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 the month, sunrise is at 7:00 am and sunset at 4:31 pm. On the last day of December, sunrise is at 7:18 am and sunset at 4:41 pm EST.
Sunshine
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 reading of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for average individuals.Note: The maximum daily UV index of 2 in December interprets into the following recommendations:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Always opt for UVA and UVB-resistant sunglasses on radiant days. Consider this! The reflection from snow can almost double the intensity of the Sun's UV radiation.
Frequently asked questions
Is December cold in Greenbriar?
What is the average humidity in December in Greenbriar?
How many days does it rain in December in Greenbriar?
How much does it snow in Greenbriar in December?
What is the month with the shortest days in Greenbriar?
How many hours of daylight does Greenbriar have in December?
When are sunrise and sunset in December in Greenbriar?
How many hours of sunshine does Greenbriar have in December?
What are the months with the lowest UV index in Greenbriar?
What is the UV index intensity in December in Greenbriar?
Average temperature in December
Greenbriar, 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
Greenbriar, 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
Greenbriar, 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
Greenbriar, 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
Greenbriar, 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
Greenbriar, 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
Greenbriar, 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
Greenbriar, 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
Greenbriar, 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
Greenbriar, 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
Greenbriar, 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
Greenbriar, 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
Greenbriar, 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).
Greenbriar, New Jersey, USA
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