December weather forecast and climate
Rivercrest Manor, NJ

December, the first month of the winter, in Rivercrest Manor, is still a chilly month, with temperature in the range of an average high of 45°F (7.2°C) and an average low of 36.1°F (2.3°C).

Temperature

In December, the average high-temperature marginally drops, from a cool 53.1°F (11.7°C) in November, to a chilly 45°F (7.2°C). In Rivercrest Manor, in December, the average low-temperature is 36.1°F (2.3°C).

Humidity

In December, the average relative humidity is 77%.

Rainfall

In Rivercrest Manor, during 9.6 rainfall days, 1.5" (38mm) of precipitation is typically accumulated. In Rivercrest Manor, New Jersey, during the entire year, the rain falls for 129.4 days and collects up to 15.31" (389mm) of precipitation.

Snowfall

January through March, November and December are months with snowfall in Rivercrest Manor. The month with the most snowfall in Rivercrest Manor is December when snow falls for 2.8 days and typically aggregates up to 0.75" (19mm) of snow.

Daylight

December has the shortest days of the year in Rivercrest Manor, with an average of 9.4h of daylight.

Sunshine

In Rivercrest Manor, the average sunshine in December 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 estimate of 2, and below, represents a low health risk from the exposure to the Sun's UV radiation for average individuals.
Note: In December, the average maximum UV index of 2 translate into the following recommendations:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.

What is the temperature in December in Rivercrest Manor?

In December, in Rivercrest Manor, the average high-temperature is 45°F (7.2°C), and the average low-temperature is 36.1°F (2.3°C).

What is the average humidity in December in Rivercrest Manor?

In Rivercrest Manor, New Jersey, the average relative humidity in December is 77%.

How many days does it rain in December in Rivercrest Manor?

In December, the rain falls for 9.6 days. Throughout December, 1.5" (38mm) of precipitation is accumulated.

How much does it snow in Rivercrest Manor in December?

In December, it is snowing for 2.8 days. Throughout December, 0.75" (19mm) of snow is accumulated.

What is the snowiest month in Rivercrest Manor?

The month with the most snowfall in Rivercrest Manor, New Jersey, is December when snow falls for 2.8 days and typically aggregates up to 0.75" (19mm) of snow.

What is the month with the shortest days in Rivercrest Manor?

The month with the shortest days is December, with an average of 9.4h of daylight.

What is the average length of the day in December in Rivercrest Manor?

The average length of the day in December in Rivercrest Manor is 9.4h.

How many hours of sunshine does Rivercrest Manor have in December?

In Rivercrest Manor, New Jersey, the average sunshine in December is 5.1h.

What is the month with the lowest UV index in Rivercrest Manor?

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Rivercrest Manor, New Jersey.

How high is the UV index in December in Rivercrest Manor?

The average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents a minimal hazard to health from unprotected exposure to the UV radiation.
Average temperature in December - Rivercrest Manor, NJ
  • Average high temperature in December: 45°F

The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (38.7°F).

  • Average low temperature in December: 36.1°F

The month with the highest average low temperature is July (70.7°F).
The coldest month (with the lowest average low temperature) is January (28.8°F).

Average pressure in December - Rivercrest Manor, 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 - Rivercrest Manor, NJ
  • Average wind speed in December: 11.1mph

The windiest month (with the highest average wind speed) is January (11.9mph).
The calmest months (with the lowest average wind speed) are July and August (7.8mph).

Average humidity in December - Rivercrest Manor, NJ
  • Average humidity in December: 77%

Months with the highest relative humidity are May and June (80%).
Months with the lowest relative humidity are January, March and November (74%).

Average rainfall in December - Rivercrest Manor, NJ
  • Average rainfall in December: 1.5"

The wettest month (with the highest rainfall) is July (1.97").
The driest month (with the least rainfall) is January (0.79").

Average rainfall days in December - Rivercrest Manor, NJ
  • Average rainfall days in December: 9.6 days

The month with the highest number of rainy days is July (14.3 days).
The month with the least rainy days is January (6.9 days).

Average snowfall in December - Rivercrest Manor, NJ
  • Average snowfall in December: 0.75"

The month with the highest snowfall is December (0.75").
Months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in December - Rivercrest Manor, NJ
  • Average snowfall days in December: 2.8 days

The month with the highest number of snowfall days is January (4.3 days).
Months with the least snowfall days are April, May, June, July, August, September and October (0 days).

Average daylight in December / Average sunshine in December - Rivercrest Manor, NJ
  • Average daylight in December: 9.4h

The month with the longest days is June (Average daylight: 15h).
The month with the shortest days is December (Average daylight: 9.4h).

  • Average sunshine in December: 5.1h

The month with the most sunshine is July (Average sunshine: 10.7h).
The month with the least sunshine is February (Average sunshine: 4.9h).

Average sunshine days in December - Rivercrest Manor, NJ
  • Average sunshine days in December: 17.6 days

The month with the most sunshine days is November (20.6 days).
The month with the least sunshine days is July (13.9 days).

Average UV index in December - Rivercrest Manor, NJ
  • Average UV index in December: 2

Months with the highest UV index are June, July and August (UV index 6).
Months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in December - Rivercrest Manor, NJ
  • Average cloud cover in December: 46

The month with the most cloud cover is February (Cloud cover 47).
Months with the least cloud cover are July and August (Cloud cover 28).

Average visibility in December - Rivercrest Manor, NJ
  • Average visibility in December: 6mi

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