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
December's arrival signals a moderate reduction in the average high-temperature, easing from a cool 53.6°F (12°C) in November to a frosty 45.9°F (7.7°C). New Gretna experiences a minimal drop from daytime high temperatures, recording an average low-temperature of 37°F (2.8°C) throughout December.Humidity
In December, the average relative humidity is 76%.Rainfall
In December, in New Gretna, the rain falls for 8.1 days. Throughout December, 1.14" (29mm) of precipitation is accumulated. Throughout the year, in New Gretna, New Jersey, there are 113.3 rainfall days, and 11.06" (281mm) of precipitation is accumulated.Snowfall
Months with snowfall in New Gretna, New Jersey, are January through March, November and December. In December, it is snowing for 1.6 days. Throughout December, 0.39" (10mm) of snow is accumulated. In New Gretna, during the entire year, snow falls for 10.7 days and aggregates up to 2.24" (57mm) of snow.Daylight
December has the shortest days of the year in New Gretna, with an average of 9h and 24min of daylight.On the first day of December in New Gretna, sunrise is at 6:59 am and sunset at 4:34 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 4:43 pm EST.
Sunshine
The average sunshine in December in New Gretna 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 of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for average individuals.Note: In December, a daily maximum UV index of 2 leads to the following instructions:
While most individuals can withstand prolonged sun exposure, it is imperative that babies, children, and those with sensitive skin always be shielded. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
Frequently asked questions
What is the usual temperature for New Gretna in December?
What is the average humidity in December in New Gretna?
How much does it rain in New Gretna in December?
How much does it snow in New Gretna in December?
What is the month with the shortest days in New Gretna?
What is the average length of the day in December in New Gretna?
What time are sunrise and sunset in December in New Gretna?
How many hours of sunshine does New Gretna have in December?
When is the lowest UV index in New Gretna?
What is the UV index intensity in December in New Gretna?
Average temperature in December
New Gretna, NJ
- Average high temperature in December: 45.9°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (39.7°F).
- Average low temperature in December: 37°F
The month with the highest average low temperature is July (71.1°F).
The coldest month (with the lowest average low temperature) is January (29.7°F).
Average pressure in December
New Gretna, 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 (29.94"Hg).
Average wind speed in December
New Gretna, NJ
- Average wind speed in December: 11.1mph
The windiest month (with the highest average wind speed) is January (11.7mph).
The calmest month (with the lowest average wind speed) is August (7.9mph).
Average humidity in December
New Gretna, 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, April and November (74%).
Average rainfall in December
New Gretna, NJ
- Average rainfall in December: 1.14"
The wettest month (with the highest rainfall) is July (1.18").
The driest months (with the least rainfall) are January and September (0.67").
Average rainfall days in December
New Gretna, NJ
- Average rainfall days in December: 8.1 days
The month with the highest number of rainy days is July (12.6 days).
The month with the least rainy days is November (6.5 days).
Average snowfall in December
New Gretna, NJ
- Average snowfall in December: 0.39"
The month with the highest snowfall is January (0.98").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
New Gretna, NJ
- Average snowfall days in December: 1.6 days
The month with the highest number of snowfall days is January (3.7 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
New Gretna, NJ
- Average daylight in December: 9h and 2min
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 1min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 0min).
Average sunshine days in December
New Gretna, NJ
- Average sunshine days in December: 21.2 days
The month with the most sunshine days is November (21.6 days).
The month with the least sunshine days is July (15.6 days).
Average UV index in December
New Gretna, 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
New Gretna, NJ
- Average cloud cover in December: 45
The month with the most cloud cover is February (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 26).
Average visibility in December
New Gretna, 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).
New Gretna, New Jersey, USA
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