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 commencement of December indicates a shift in the average high-temperature, receding from November's fresh 50.9°F (10.5°C) to an icy 41.9°F (5.5°C). Throughout the December nights, Hackensack encounters a low-temperature of 31.5°F (-0.3°C).Humidity
In December, the average relative humidity is 76%.Rainfall
In Hackensack, New Jersey, during December, the rain falls for 11 days and regularly aggregates up to 2.32" (59mm) of precipitation. In Hackensack, during the entire year, the rain falls for 149.3 days and collects up to 22.36" (568mm) of precipitation.Snowfall
Months with snowfall are January through May, November and December. In Hackensack, New Jersey, during December, snow falls for 3.7 days and regularly aggregates up to 1.02" (26mm) of snow. In Hackensack, New Jersey, during the entire year, snow falls for 19.4 days and aggregates up to 4.96" (126mm) of snow.Daylight
With an average of 9h and 18min of daylight, December has the shortest days of the year in Hackensack, New Jersey.On the first day of the month, sunrise is at 7:01 am and sunset at 4:28 pm. On the last day of December, in Hackensack, sunrise is at 7:20 am and sunset at 4:38 pm EST.
Sunshine
In Hackensack, the average sunshine in December is 4.8h.UV index
The months with the lowest UV index in Hackensack are January through March, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for average individuals.Note: In December, a regular UV index of 2 translates into these guidelines:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Frequently asked questions
Is December cold in Hackensack?
What is the average humidity in December in Hackensack?
How much does it rain in Hackensack in December?
How many days does it snow in December in Hackensack?
What is the month with the shortest days in Hackensack?
What is the average length of the day in December in Hackensack?
When are sunrise and sunset in December in Hackensack?
How many hours of sunshine does Hackensack have in December?
When is the lowest UV index in Hackensack?
What is the UV index intensity in December in Hackensack?
Average temperature in December
Hackensack, NJ
- Average high temperature in December: 41.9°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 (35.4°F).
- Average low temperature in December: 31.5°F
The month with the highest average low temperature is July (68.2°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).
Average pressure in December
Hackensack, NJ
- Average pressure in December: 30.07"Hg
The month with the highest atmospheric pressure is November (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Hackensack, NJ
- Average wind speed in December: 8.2mph
The windiest months (with the highest average wind speed) are January and March (8.8mph).
The calmest month (with the lowest average wind speed) is July (5.9mph).
Average humidity in December
Hackensack, NJ
- Average humidity in December: 76%
The month with the highest relative humidity is February (77%).
The month with the lowest relative humidity is August (70%).
Average rainfall in December
Hackensack, NJ
- Average rainfall in December: 2.32"
The wettest month (with the highest rainfall) is July (2.48").
The driest month (with the least rainfall) is February (1.34").
Average rainfall days in December
Hackensack, NJ
- Average rainfall days in December: 11 days
The month with the highest number of rainy days is May (15.9 days).
The month with the least rainy days is January (7.7 days).
Average snowfall in December
Hackensack, NJ
- Average snowfall in December: 1.02"
The month with the highest snowfall is February (1.34").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in December
Hackensack, NJ
- Average snowfall days in December: 3.7 days
The month with the highest number of snowfall days is February (5.7 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
Hackensack, NJ
- Average daylight in December: 9h and 2min
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 5min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in December
Hackensack, NJ
- Average sunshine days in December: 16.5 days
The month with the most sunshine days is November (19.4 days).
The month with the least sunshine days is June (11.9 days).
Average UV index in December
Hackensack, 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
Hackensack, NJ
- Average cloud cover in December: 48
The months with the most cloud cover are February, March and December (Cloud cover 48).
The months with the least cloud cover are July and August (Cloud cover 32).
Average visibility in December
Hackensack, 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).
Hackensack, New Jersey, USA
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