December weather forecast
Lawnside, NJ

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Weather in December

December, the first month of the winter in Lawnside, is still a chilly month, with an average temperature fluctuating between 44.2°F (6.8°C) and 33.1°F (0.6°C).

Temperature

Welcoming December, Lawnside observes a shift in the average high-temperature, falling from November's cool 53.6°F (12°C) to a chilly 44.2°F (6.8°C). Lawnside cools down to an average low-temperature of 33.1°F (0.6°C) throughout the month of December.

Humidity

In Lawnside, the average relative humidity in December is 76%.

Rainfall

In Lawnside, in December, it is raining for 7.3 days, with typically 1.26" (32mm) of accumulated precipitation. In Lawnside, during the entire year, the rain falls for 117 days and collects up to 12.13" (308mm) of precipitation.

Snowfall

Months with snowfall are January through March, May, November and December. In Lawnside, New Jersey, during December, snow falls for 2 days and regularly aggregates up to 0.24" (6mm) of snow. Throughout the year, there are 11.4 snowfall days, and 3.11" (79mm) of snow is accumulated.

Daylight

December has the shortest days of the year, with an average of 9h and 24min of daylight.
On the first day of the month, sunrise is at 7:02 am and sunset at 4:35 pm. On the last day of December, sunrise is at 7:21 am and sunset at 4:45 pm EST.

Sunshine

The average sunshine in December is 5.1h.

UV index

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for the ordinary person.
Note: The daily maximum UV index of 2 in December interprets into the following advice:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.
Updated: Jul 23, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is it in December?

December temperatures vary between a high-temperature of 44.2°F (6.8°C) and a low-temperature of 33.1°F (0.6°C). In August, the average heat index (a.k.a. 'real feel', 'feels like'), which combines air temperature and relative humidity, is evaluated at 89.6°F (32°C).

What is the average humidity in December?

In December, the average relative humidity is 76%.

How many days does it rain in December in Lawnside?

In Lawnside, in December, it is raining for 7.3 days, with typically 1.26" (32mm) of accumulated precipitation.

How much does it snow in December?

In December, it is snowing for 2 days. Throughout December, 0.24" (6mm) of snow is accumulated.

What is the month with the shortest days in Lawnside?

The month with the shortest days is December, with an average of 9h and 24min of daylight.

How many hours of daylight does Lawnside have in December?

The average day length in December is 9h and 24min.

When are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 7:02 am and sunset at 4:35 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 4:45 pm EST.

How many hours of sunshine does Lawnside have in December?

In December, the average sunshine duration is 5.1h.

What are the months with the lowest UV index?

January, February, 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?

The average daily maximum UV index in December is 2. A UV Index value of 2, and less, symbolizes a low health risk 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
Lawnside, NJ

Average temperature in December - Lawnside, NJ
  • Average high temperature in December: 44.2°F

The warmest month (with the highest average high temperature) is July (85.8°F).
The month with the lowest average high temperature is January (37.9°F).

  • Average low temperature in December: 33.1°F

The month with the highest average low temperature is July (69.3°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).

Average pressure in December
Lawnside, NJ

Average pressure in December - Lawnside, NJ
  • Average pressure in December: 30.09"Hg

The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed in December
Lawnside, NJ

Average wind speed in December - Lawnside, NJ
  • Average wind speed in December: 7.6mph

The windiest month (with the highest average wind speed) is April (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).

Average humidity in December
Lawnside, NJ

Average humidity in December - Lawnside, NJ
  • Average humidity in December: 76%

The month with the highest relative humidity is October (77%).
The month with the lowest relative humidity is April (71%).

Average rainfall in December
Lawnside, NJ

Average rainfall in December - Lawnside, NJ
  • Average rainfall in December: 1.26"

The wettest month (with the highest rainfall) is August (1.38").
The driest months (with the least rainfall) are January and September (0.67").

Average rainfall days in December
Lawnside, NJ

Average rainfall days in December - Lawnside, NJ
  • Average rainfall days in December: 7.3 days

The month with the highest number of rainy days is July (13.7 days).
The month with the least rainy days is January (6.5 days).

Average snowfall in December
Lawnside, NJ

Average snowfall in December - Lawnside, NJ
  • Average snowfall in December: 0.24"

The month with the highest snowfall is February (1.1").
The months with the least snowfall are April, June, July, August, September and October (0").

Average snowfall days in December
Lawnside, NJ

Average snowfall days in December - Lawnside, NJ
  • Average snowfall days in December: 2 days

The month with the highest number of snowfall days is January (3.5 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
Lawnside, NJ

Average daylight in December / Average sunshine in December - Lawnside, 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 24min).

  • Average sunshine in December: 5h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).

Average sunshine days in December
Lawnside, NJ

Average sunshine days in December - Lawnside, NJ
  • Average sunshine days in December: 21.5 days

The month with the most sunshine days is November (21.7 days).
The month with the least sunshine days is July (14.3 days).

Average UV index in December
Lawnside, NJ

Average UV index in December - Lawnside, NJ
  • Average UV index in December: 2

The months with the highest UV index are May, 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
Lawnside, NJ

Average cloud cover in December - Lawnside, NJ
  • Average cloud cover in December: 46

The months with the most cloud cover are February and March (Cloud cover 47).
The months with the least cloud cover are July and August (Cloud cover 31).

Average visibility in December
Lawnside, NJ

Average visibility in December - Lawnside, 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).

Lawnside, New Jersey, USA

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