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 sea temperature 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 ushers in a minor alteration in Highlands's climate, with the average high-temperature moving from November's fresh 52.3°F (11.3°C) to a frosty 44.2°F (6.8°C). Highlands registers a subtle dip to an average of 36°F (2.2°C) during the nights of December.Humidity
The average relative humidity in December is 75%.Rainfall
In Highlands, in December, during 9.2 rainfall days, 1.18" (30mm) of precipitation is typically accumulated. In Highlands, during the entire year, the rain falls for 125.1 days and collects up to 12.64" (321mm) of precipitation.Snowfall
Months with snowfall are January through March, October and December. The month with the most snowfall is December, when snow falls for 3.3 days and typically aggregates up to 0.47" (12mm) of snow.Ocean temperature
In December, the average ocean temperature in Highlands is 48.2°F (9°C).Note: In 48.2°F (9°C), even brief exposure to 55.4°F (13°C) feels biting, and anything less than 50°F (10°C) risks cold shock and impaired breathing, considering one's health.
Daylight
With an average of 9h and 18min of daylight, December has the shortest days of the year in Highlands.On the first day of December, sunrise is at 7:00 am and sunset at 4:30 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 4:39 pm EST.
Sunshine
In December, the average sunshine 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. A UV Index reading of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for the ordinary person.Note: The daily high UV index of 2 in December translates into this advice:
While sun exposure does not greatly affect most, individuals with fair skin, babies, and children always need vigilant safeguarding. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
Frequently asked questions
Is December cold in Highlands?
What is the average humidity in December in Highlands?
How many days does it rain in December in Highlands?
What is the snowiest month in Highlands?
When does it start snowing in Highlands?
What is the ocean temperature in December in Highlands?
What is the month with the shortest days in Highlands?
What is the average length of the day in December in Highlands?
When is the sunrise / sunset in December in Highlands?
How many hours of sunshine does Highlands have in December?
What are the months with the lowest UV index in Highlands?
What is the UV index intensity in December in Highlands?
Average temperature in December
Highlands, NJ
- Average high temperature in December: 44.2°F
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (37.9°F).
- Average low temperature in December: 36°F
The month with the highest average low temperature is July (71.2°F).
The coldest month (with the lowest average low temperature) is January (28.8°F).
Average pressure in December
Highlands, 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
Highlands, NJ
- Average wind speed in December: 11.7mph
The windiest month (with the highest average wind speed) is January (12.4mph).
The calmest month (with the lowest average wind speed) is July (7.9mph).
Average humidity in December
Highlands, NJ
- Average humidity in December: 75%
The months with the highest relative humidity are May and June (79%).
The month with the lowest relative humidity is November (73%).
Average rainfall in December
Highlands, NJ
- Average rainfall in December: 1.18"
The wettest month (with the highest rainfall) is July (1.61").
The driest month (with the least rainfall) is January (0.63").
Average rainfall days in December
Highlands, NJ
- Average rainfall days in December: 9.2 days
The month with the highest number of rainy days is July (15.1 days).
The month with the least rainy days is January (6.5 days).
Average snowfall in December
Highlands, NJ
- Average snowfall in December: 0.47"
The month with the highest snowfall is December (0.47").
The months with the least snowfall are April, May, June, July, August, September and November (0").
Average snowfall days in December
Highlands, NJ
- Average snowfall days in December: 3.3 days
The month with the highest number of snowfall days is January (3.9 days).
The months with the least snowfall days are April, May, June, July, August and September (0 days).
Average sea temperature in December
Highlands, NJ
- Average sea temperature in December: 48.2°F
The best month for swimming (with the highest average sea temperature) is August (74.5°F).
The coldest month (with the lowest average sea temperature) is February (40.1°F).
Average daylight in December /
Average sunshine in December
Highlands, NJ
- Average daylight in December: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- 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: 4h and 54min).
Average sunshine days in December
Highlands, NJ
- Average sunshine days in December: 19.1 days
The month with the most sunshine days is November (21.6 days).
The month with the least sunshine days is July (13 days).
Average UV index in December
Highlands, 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, November and December (UV index 2).
Average cloud cover in December
Highlands, NJ
- Average cloud cover in December: 46
The month with the most cloud cover is February (Cloud cover 47).
The months with the least cloud cover are July and August (Cloud cover 28).
Average visibility in December
Highlands, 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).
Highlands, New Jersey, USA
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