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
The onset of December is marked by a minor decrease in temperature, transitioning from a cool 53.4°F (11.9°C) in November to a chilly 44.6°F (7°C). During the month of December, Atco's nighttime temperature lowers to an average of 33.8°F (1°C).Humidity
In December, the average relative humidity in Atco, New Jersey, is 77%.Rainfall
In Atco, in December, it is raining for 7.9 days, with typically 1.3" (33mm) of accumulated precipitation. In Atco, during the entire year, the rain falls for 115.1 days and collects up to 11.97" (304mm) of precipitation.Snowfall
January through May, November and December are months with snowfall in Atco. In Atco, in December, during 2.4 snowfall days, 0.28" (7mm) of snow is typically accumulated. In Atco, during the entire year, snow falls for 13.1 days and aggregates up to 3.5" (89mm) of snow.Daylight
The month with the shortest days in Atco is December, with an average of 9h and 24min of daylight.On the first day of December, sunrise is at 7:02 am and sunset at 4:35 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 4:45 pm EST.
Sunshine
In Atco, the average sunshine in December is 5.1h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Atco. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for average individuals.Note: The daily maximum UV index of 2 in December interprets into the following advice:
Protection from prolonged sun exposure is necessary for babies, children, and individuals with sensitive skin. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Always opt for UVA and UVB-resistant sunglasses on radiant days. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
Frequently asked questions
How cold is December in Atco?
What is the average humidity in December in Atco?
How much does it rain in Atco in December?
How many days does it snow in December in Atco?
What is the month with the shortest days in Atco?
How many hours of daylight does Atco have in December?
When is the sunrise / sunset in December in Atco?
How long on average sun shines in December in Atco?
What is the month with the lowest UV index in Atco?
What is the UV index reading in December in Atco?
Average temperature in December
Atco, NJ
- Average high temperature in December: 44.6°F
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (38.5°F).
- Average low temperature in December: 33.8°F
The month with the highest average low temperature is July (69.1°F).
The coldest month (with the lowest average low temperature) is January (26.8°F).
Average pressure in December
Atco, 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
Atco, NJ
- Average wind speed in December: 7.8mph
The windiest months (with the highest average wind speed) are March and April (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.8mph).
Average humidity in December
Atco, NJ
- Average humidity in December: 77%
The month with the highest relative humidity is October (78%).
The month with the lowest relative humidity is April (71%).
Average rainfall in December
Atco, NJ
- Average rainfall in December: 1.3"
The wettest month (with the highest rainfall) is July (1.42").
The driest month (with the least rainfall) is January (0.63").
Average rainfall days in December
Atco, NJ
- Average rainfall days in December: 7.9 days
The month with the highest number of rainy days is July (13.5 days).
The month with the least rainy days is January (6.5 days).
Average snowfall in December
Atco, NJ
- Average snowfall in December: 0.28"
The months with the highest snowfall are January and February (1.06").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in December
Atco, NJ
- Average snowfall days in December: 2.4 days
The month with the highest number of snowfall days is February (4 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Atco, 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
Atco, NJ
- Average sunshine days in December: 21.1 days
The month with the most sunshine days is November (22.5 days).
The month with the least sunshine days is July (13.9 days).
Average UV index in December
Atco, 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
Atco, NJ
- Average cloud cover in December: 45
The months with the most cloud cover are February and March (Cloud cover 46).
The months with the least cloud cover are July and August (Cloud cover 29).
Average visibility in December
Atco, 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).
Atco, New Jersey, USA
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