December weather forecastSperry Springs, NJ
December
Weather in December
The first month of the winter, December, is also an icy month in Sperry Springs, New Jersey, with an average temperature fluctuating between 27.7°F (-2.4°C) and 39.2°F (4°C).Temperature
December involves a decrease in temperature, down from a chilly 48.6°F (9.2°C) in November to a cold 39.2°F (4°C). The low-temperature average for Sperry Springs during December stands at a subzero cold 27.7°F (-2.4°C).Humidity
The months with the highest humidity in Sperry Springs, New Jersey, are February, October and December, with an average relative humidity of 81%.Rainfall
In Sperry Springs, New Jersey, in December, it is raining for 11 days, with typically 3.54" (90mm) of accumulated precipitation. In Sperry Springs, during the entire year, the rain falls for 160.1 days and collects up to 35.87" (911mm) of precipitation.Snowfall
January through May, October through December are months with snowfall in Sperry Springs, New Jersey. In December, it is snowing for 6.7 days. Throughout December, 3.94" (100mm) of snow is accumulated. In Sperry Springs, during the entire year, snow falls for 40.2 days and aggregates up to 23.62" (600mm) of snow.Daylight
With an average of 9h and 18min of daylight, December has the shortest days of the year in Sperry Springs.On the first day of December in Sperry Springs, New Jersey, sunrise is at 7:04 am and sunset at 4:31 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 4:40 pm EST.
Sunshine
The average sunshine in December is 4.6h.UV index
December is the month with the lowest UV index in Sperry Springs, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV rays for the average person.Note: The UV index of 1 during December translates into the following guidance:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Sperry Springs, NJ
- Average high temperature in December: 39.2°F
The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (33.3°F).
- Average low temperature in December: 27.7°F
The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (20.7°F).
Average pressure in December
Sperry Springs, 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
Sperry Springs, 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 (5mph).
Average humidity in December
Sperry Springs, NJ
- Average humidity in December: 81%
The months with the highest relative humidity are February, October and December (81%).
The month with the lowest relative humidity is April (76%).
Average rainfall in December
Sperry Springs, NJ
- Average rainfall in December: 3.54"
The wettest month (with the highest rainfall) is July (3.66").
The driest month (with the least rainfall) is September (2.05").
Average rainfall days in December
Sperry Springs, NJ
- Average rainfall days in December: 11 days
The months with the highest number of rainy days are May and July (17.4 days).
The month with the least rainy days is January (7.5 days).
Average snowfall in December
Sperry Springs, NJ
- Average snowfall in December: 3.94"
The month with the highest snowfall is February (5.71").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Sperry Springs, NJ
- Average snowfall days in December: 6.7 days
The month with the highest number of snowfall days is February (10.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Sperry Springs, 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
Sperry Springs, NJ
- Average sunshine days in December: 15.2 days
The month with the most sunshine days is November (16.4 days).
The month with the least sunshine days is June (10.6 days).
Average UV index in December
Sperry Springs, NJ
- Average UV index in December: 1
The month with the highest UV index is June (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Sperry Springs, NJ
- Average cloud cover in December: 52
The months with the most cloud cover are February, March and December (Cloud cover 52).
The months with the least cloud cover are July and August (Cloud cover 37).
Average visibility in December
Sperry Springs, NJ
- Average visibility in December: 5mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October, November and December (5mi).
