December weather forecast
Fair Lawn, NJ

Share

Weather in December

The first month of the winter, December, is still a cold month in Fair Lawn, New Jersey, with an average temperature varying between 41.2°F (5.1°C) and 30.9°F (-0.6°C).

Temperature

Fair Lawn's progression into December involves a drop in the average high-temperature, receding from a cool 50.9°F (10.5°C) in November to an icy 41.2°F (5.1°C). Nighttime temperatures consistently average a subzero cold 30.9°F (-0.6°C) during December.

Humidity

The months with the highest humidity in Fair Lawn are February and December, with an average relative humidity of 78%.

Rainfall

The wettest months in Fair Lawn, New Jersey, are July and December, with an average 3.07" (78mm) of rainfall.

Snowfall

Months with snowfall in Fair Lawn are January through May, October through December. In December, it is snowing for 4 days. Throughout December, 1.54" (39mm) of snow is accumulated. Throughout the year, in Fair Lawn, New Jersey, there are 24.9 snowfall days, and 10.04" (255mm) of snow is accumulated.

Daylight

December has the shortest days of the year in Fair Lawn, with an average of 9h and 18min of daylight.
On the first day of December in Fair Lawn, New Jersey, sunrise is at 7:02 am and sunset at 4:29 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 4:38 pm EST.

Sunshine

The average sunshine in December is 4.8h.

UV index

The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for the average person.
Note: In December, a daily UV index of 2 turns into the following recommendations:
In contrast to children, who must always be shielded from the sun, most people can tolerate up to an hour of sun exposure without any burns. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
[Resources]

Frequently asked questions

Is it cold in Fair Lawn during December?

During December, Fair Lawn experiences an average high-temperature of 41.2°F (5.1°C) and a low-temperature of 30.9°F (-0.6°C). In August, the average heat index (a.k.a. 'feels like', 'real feel'), which takes the relative humidity and factors it into the air temperature reading, is calculated to be 87.8°F (31°C).

What are the most humid months in Fair Lawn?

The months with the highest humidity in Fair Lawn, New Jersey, are February and December, with an average relative humidity of 78%.

What is the average humidity in December in Fair Lawn?

The average relative humidity in December in Fair Lawn, New Jersey, is 78%.

What is the rainiest month in Fair Lawn?

The wettest months are July and December, with an average 3.07" (78mm) of rainfall.

How much does it rain in Fair Lawn in December?

In Fair Lawn, New Jersey, in December, during 11.2 rainfall days, 3.07" (78mm) of precipitation is typically accumulated.

How many days does it snow in December in Fair Lawn?

In Fair Lawn, during December, snow falls for 4 days and regularly aggregates up to 1.54" (39mm) of snow.

What is the month with the shortest days in Fair Lawn?

With an average of 9h and 18min of daylight, December has the shortest days of the year in Fair Lawn.

What is the average length of the day in December in Fair Lawn?

The average day length in December in Fair Lawn, New Jersey, is 9h and 17min.

What time are sunrise and sunset in December in Fair Lawn?

On the first day of December in Fair Lawn, sunrise is at 7:02 am and sunset at 4:29 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 4:38 pm EST.

How many hours of sunshine does Fair Lawn have in December?

The average sunshine duration in December in Fair Lawn, New Jersey, is 4.8h.

What are the months with the lowest UV index in Fair Lawn?

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index.

What is the UV index reading in December in Fair Lawn?

In December, the average daily maximum UV index in Fair Lawn, New Jersey, is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Fair Lawn, NJ

Average temperature in December - Fair Lawn, NJ
  • Average high temperature in December: 41.2°F

The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is January (35.2°F).

  • Average low temperature in December: 30.9°F

The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).

[Resources]

Average pressure in December
Fair Lawn, NJ

Average pressure in December - Fair Lawn, NJ
  • Average pressure in December: 30.07"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).

[Resources]

Average wind speed in December
Fair Lawn, NJ

Average wind speed in December - Fair Lawn, NJ
  • Average wind speed in December: 7.8mph

The windiest month (with the highest average wind speed) is March (8.4mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).

[Resources]

Average humidity in December
Fair Lawn, NJ

Average humidity in December - Fair Lawn, NJ
  • Average humidity in December: 78%

The months with the highest relative humidity are February and December (78%).
The months with the lowest relative humidity are April, July and August (72%).

[Resources]

Average rainfall in December
Fair Lawn, NJ

Average rainfall in December - Fair Lawn, NJ
  • Average rainfall in December: 3.07"

The wettest months (with the highest rainfall) are July and December (3.07").
The driest month (with the least rainfall) is September (1.73").

[Resources]

Average rainfall days in December
Fair Lawn, NJ

Average rainfall days in December - Fair Lawn, NJ
  • Average rainfall days in December: 11.2 days

The month with the highest number of rainy days is June (17 days).
The month with the least rainy days is January (8.9 days).

[Resources]

Average snowfall in December
Fair Lawn, NJ

Average snowfall in December - Fair Lawn, NJ
  • Average snowfall in December: 1.54"

The month with the highest snowfall is February (3.23").
The months with the least snowfall are June, July, August and September (0").

[Resources]

Average snowfall days in December
Fair Lawn, NJ

Average snowfall days in December - Fair Lawn, NJ
  • Average snowfall days in December: 4 days

The month with the highest number of snowfall days is February (7.2 days).
The months with the least snowfall days are June, July, August and September (0 days).

[Resources]

Average daylight in December /
Average sunshine in December
Fair Lawn, NJ

Average daylight in December / Average sunshine in December - Fair Lawn, 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 24min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

[Resources]

Average sunshine days in December
Fair Lawn, NJ

Average sunshine days in December - Fair Lawn, NJ
  • Average sunshine days in December: 15.7 days

The month with the most sunshine days is November (18.8 days).
The month with the least sunshine days is June (10.5 days).

[Resources]

Average UV index in December
Fair Lawn, NJ

Average UV index in December - Fair Lawn, 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).

[Resources]

Average cloud cover in December
Fair Lawn, NJ

Average cloud cover in December - Fair Lawn, NJ
  • Average cloud cover in December: 48

The month with the most cloud cover is March (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 33).

[Resources]

Average visibility in December
Fair Lawn, NJ

Average visibility in December - Fair Lawn, NJ
  • Average visibility in December: 6mi

The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).

[Resources]

Fair Lawn, New Jersey, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location