December weather forecast and climate
Tranquility, NJ

December, the first month of the winter, in Tranquility, is still a cold month, with average temperature ranging between min 27.3°F (-2.6°C) and max 39°F (3.9°C).

Temperature

In Tranquility, the average high-temperature in December decreases, from a frosty 48.4°F (9.1°C) in November, to a cold 39°F (3.9°C). In Tranquility, in December, the average low-temperature is 27.3°F (-2.6°C).

Humidity

The average relative humidity is 81%.

Rainfall

In Tranquility, during December, the rain falls for 9.2 days and regularly aggregates up to 2.05" (52mm) of precipitation. Throughout the year, in Tranquility, there are 150.5 rainfall days, and 25.08" (637mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall in Tranquility. In Tranquility, New Jersey, during December, snow falls for 5.4 days and regularly aggregates up to 2.05" (52mm) of snow. Throughout the year, in Tranquility, there are 30.1 snowfall days, and 14.88" (378mm) of snow is accumulated.

Daylight

December has the shortest days of the year in Tranquility, with an average of 9.3h of daylight.

Sunshine

In Tranquility, the average sunshine is 4.5h.

UV index

December is the month with the lowest UV index in Tranquility, New Jersey, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a low health risk from unprotected exposure to the Sun's UV rays for the ordinary person.
Note: The average daily UV index of 1 in December transform into the following instructions:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

What is the temperature in December in Tranquility?

In December, in Tranquility, New Jersey, the average high-temperature is 39°F (3.9°C), and the average low-temperature is 27.3°F (-2.6°C).

What is the average humidity in December in Tranquility?

In Tranquility, New Jersey, the average relative humidity in December is 81%.

How many days does it rain in December in Tranquility?

In Tranquility, New Jersey, in December, it is raining for 9.2 days, with typically 2.05" (52mm) of accumulated precipitation.

How much does it snow in Tranquility in December?

In Tranquility, in December, snow falls for 5.4 days, with typically accumulated 2.05" (52mm) of snow.

What is the month with the shortest days in Tranquility?

December has the shortest days of the year in Tranquility, with an average of 9.3h of daylight.

What is the average length of the day in December in Tranquility?

In December, the average length of the day in Tranquility, New Jersey, is 9.3h.

How long on average sun shines in December in Tranquility?

The average sunshine in December in Tranquility, New Jersey, is 4.5h.

What is the month with the lowest UV index in Tranquility?

With an average maximum UV index of 1, December is the month with the lowest UV index.

What is the UV index reading in December in Tranquility?

The average daily maximum UV index in December in Tranquility is 1. A UV Index reading of 2, and below, represents a minimal hazard to health from the exposure to the Sun's UV radiation.
Average temperature in December - Tranquility, NJ
  • Average high temperature in December: 39°F

The warmest month (with the highest average high temperature) is July (82.8°F).
The month with the lowest average high temperature is January (33.4°F).

  • Average low temperature in December: 27.3°F

The month with the highest average low temperature is July (62.1°F).
The coldest month (with the lowest average low temperature) is January (20.5°F).

Average pressure in December - Tranquility, NJ
  • Average pressure in December: 30.08"

The month with the highest atmospheric pressure is November (30.11").
The month with the lowest atmospheric pressure is June (29.93").

Average wind speed in December - Tranquility, NJ
  • Average wind speed in December: 7.1mph

The windiest month (with the highest average wind speed) is March (8mph).
The calmest month (with the lowest average wind speed) is August (5mph).

Average humidity in December - Tranquility, NJ
  • Average humidity in December: 81%

Months with the highest relative humidity are February and October (82%).
The month with the lowest relative humidity is April (76%).

Average rainfall in December - Tranquility, NJ
  • Average rainfall in December: 2.05"

The wettest month (with the highest rainfall) is July (2.95").
The driest month (with the least rainfall) is September (1.38").

Average rainfall days in December - Tranquility, NJ
  • Average rainfall days in December: 9.2 days

The month with the highest number of rainy days is May (17.1 days).
The month with the least rainy days is January (6.8 days).

Average snowfall in December - Tranquility, NJ
  • Average snowfall in December: 2.05"

The month with the highest snowfall is March (4.09").
Months with the least snowfall are June, July, August and September (0").

Average snowfall days in December - Tranquility, NJ
  • Average snowfall days in December: 5.4 days

The month with the highest number of snowfall days is January (8.3 days).
Months with the least snowfall days are June, July, August and September (0 days).

Average daylight in December / Average sunshine in December - Tranquility, NJ
  • Average daylight in December: 9.3h

The month with the longest days is June (Average daylight: 15.1h).
The month with the shortest days is December (Average daylight: 9.3h).

  • Average sunshine in December: 4.5h

The month with the most sunshine is July (Average sunshine: 10h).
The month with the least sunshine is February (Average sunshine: 4.2h).

Average sunshine days in December - Tranquility, NJ
  • Average sunshine days in December: 17.5 days

The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is June (11.3 days).

Average UV index in December - Tranquility, 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 - Tranquility, NJ
  • Average cloud cover in December: 52

The month with the most cloud cover is February (Cloud cover 53).
The month with the least cloud cover is July (Cloud cover 37).

Average visibility in December - Tranquility, NJ
  • Average visibility in December: 5mi

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