December weather forecastHighland Lakes, NJ
December
Weather in December
The first month of the winter, December, is also an icy month in Highland Lakes, New Jersey, with an average temperature varying between 38.7°F (3.7°C) and 26.8°F (-2.9°C).Temperature
The onset of December results in a decrease in the average high-temperature, receding from a chilly 48°F (8.9°C) in November to an icy 38.7°F (3.7°C). Highland Lakes throughout December, records an average low-temperature of 26.8°F (-2.9°C).Humidity
February, October and December, with an average relative humidity of 82%, are the most humid months in Highland Lakes.Rainfall
In December, the rain falls for 9.4 days. Throughout December, 2.52" (64mm) of precipitation is accumulated. Throughout the year, there are 149.5 rainfall days, and 28.23" (717mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In Highland Lakes, New Jersey, in December, snow falls for 5.5 days, with typically accumulated 3.5" (89mm) of snow. In Highland Lakes, during the entire year, snow falls for 30.6 days and aggregates up to 19.53" (496mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 18min of daylight.On the first day of December, sunrise is at 7:04 am and sunset at 4:29 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 4:39 pm EST.
Sunshine
In Highland Lakes, the average sunshine in December is 4.6h.UV index
December is the month with the lowest UV index, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for ordinary individuals.Note: In December, an average UV index of 1 transforms into the following instructions:
Sun exposure does not present considerable issues for many, yet infants, fair-skinned people, and children necessitate constant protection. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Highland Lakes, NJ
- Average high temperature in December: 38.7°F
The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is January (32.5°F).
- Average low temperature in December: 26.8°F
The month with the highest average low temperature is July (61.9°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).
Average pressure in December
Highland Lakes, 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
Highland Lakes, NJ
- Average wind speed in December: 7mph
The windiest month (with the highest average wind speed) is March (7.8mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in December
Highland Lakes, NJ
- Average humidity in December: 82%
The months with the highest relative humidity are February, October and December (82%).
The month with the lowest relative humidity is April (76%).
Average rainfall in December
Highland Lakes, NJ
- Average rainfall in December: 2.52"
The wettest month (with the highest rainfall) is July (3.31").
The driest month (with the least rainfall) is January (1.61").
Average rainfall days in December
Highland Lakes, NJ
- Average rainfall days in December: 9.4 days
The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is January (6.3 days).
Average snowfall in December
Highland Lakes, NJ
- Average snowfall in December: 3.5"
The month with the highest snowfall is February (4.92").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Highland Lakes, NJ
- Average snowfall days in December: 5.5 days
The month with the highest number of snowfall days is February (7.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Highland Lakes, 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 12min).
Average sunshine days in December
Highland Lakes, NJ
- Average sunshine days in December: 17.8 days
The months with the most sunshine days are January and November (18.8 days).
The month with the least sunshine days is July (11.8 days).
Average UV index in December
Highland Lakes, 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
Highland Lakes, NJ
- Average cloud cover in December: 51
The month with the most cloud cover is February (Cloud cover 53).
The months with the least cloud cover are July and August (Cloud cover 37).
Average visibility in December
Highland Lakes, 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).
