December weather forecastPompton Plains, NJ
December
Weather in December
The first month of the winter, December, is also a wintry month in Pompton Plains, New Jersey, with temperature in the range of an average high of 40.1°F (4.5°C) and an average low of 29.1°F (-1.6°C).Temperature
The onset of December brings a small change in high-temperatures, falling from a chilly 49.8°F (9.9°C) in November to a wintry 40.1°F (4.5°C). Pompton Plains throughout December, experiences an average nighttime temperature of 29.1°F (-1.6°C).Humidity
In Pompton Plains, the average relative humidity in December is 79%.Rainfall
In Pompton Plains, during December, the rain falls for 11.1 days and regularly aggregates up to 3.11" (79mm) of precipitation. In Pompton Plains, during the entire year, the rain falls for 163.1 days and collects up to 31.34" (796mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Pompton Plains, in December, snow falls for 4.8 days, with typically accumulated 1.93" (49mm) of snow. Throughout the year, there are 29.7 snowfall days, and 13.31" (338mm) of snow is accumulated.Daylight
December has the shortest days of the year in Pompton Plains, with an average of 9h and 18min of daylight.On the first day of December in Pompton Plains, sunrise is at 7:03 am and sunset at 4:29 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 4:39 pm EST.
Sunshine
In December, the average sunshine is 4.6h.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 estimate of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for average individuals.Note: A maximum high UV index of 2 in December translates into the following recommendations:
Most individuals can handle sun exposure for up to an hour without burning, but children must always be shielded from sun exposure. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Pompton Plains, NJ
- Average high temperature in December: 40.1°F
The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (34.5°F).
- Average low temperature in December: 29.1°F
The month with the highest average low temperature is July (64.8°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).
Average pressure in December
Pompton Plains, 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
Pompton Plains, NJ
- Average wind speed in December: 7.3mph
The windiest month (with the highest average wind speed) is March (8.1mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in December
Pompton Plains, NJ
- Average humidity in December: 79%
The month with the highest relative humidity is February (80%).
The month with the lowest relative humidity is April (73%).
Average rainfall in December
Pompton Plains, NJ
- Average rainfall in December: 3.11"
The wettest month (with the highest rainfall) is July (3.23").
The driest month (with the least rainfall) is September (1.77").
Average rainfall days in December
Pompton Plains, NJ
- Average rainfall days in December: 11.1 days
The month with the highest number of rainy days is June (17.5 days).
The month with the least rainy days is January (8.4 days).
Average snowfall in December
Pompton Plains, NJ
- Average snowfall in December: 1.93"
The month with the highest snowfall is February (3.82").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Pompton Plains, NJ
- Average snowfall days in December: 4.8 days
The month with the highest number of snowfall days is February (8.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Pompton Plains, NJ
- Average daylight in December: 9h and 18min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in December: 4h and 36min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is February (Average sunshine: 4h and 18min).
Average sunshine days in December
Pompton Plains, NJ
- Average sunshine days in December: 15.5 days
The month with the most sunshine days is November (17.6 days).
The month with the least sunshine days is June (10.7 days).
Average UV index in December
Pompton Plains, 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, March, November and December (UV index 2).
Average cloud cover in December
Pompton Plains, NJ
- Average cloud cover in December: 50
The months with the most cloud cover are February and March (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in December
Pompton Plains, NJ
- Average visibility in December: 6mi
The months with the highest visibility are March, April, July, August, October, November and December (6mi).
The months with the lowest visibility are January, February, May, June and September (5mi).
