December weather forecast
Monmouth Heights at Manalapan, NJ

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Weather in December

The first month of the winter, December, is also a frosty month in Monmouth Heights at Manalapan, New Jersey, with an average temperature ranging between max 43.7°F (6.5°C) and min 34.2°F (1.2°C).

Temperature

A mild drop in Monmouth Heights at Manalapan's average high-temperature is observed in December, transitioning from a cool 52.2°F (11.2°C) in November to a chilly 43.7°F (6.5°C). Throughout the nights in December, an average low-temperature of 34.2°F (1.2°C) is noted.

Humidity

The average relative humidity in December is 76%.

Rainfall

December is the month with the most rainfall. Rain falls for 12.1 days and accumulates 3.35" (85mm) of precipitation.

Snowfall

January through April, October through December are months with snowfall. In Monmouth Heights at Manalapan, during December, snow falls for 3.5 days and regularly aggregates up to 1.46" (37mm) of snow. Throughout the year, there are 19.1 snowfall days, and 7.64" (194mm) of snow is accumulated.

Daylight

The month with the shortest days in Monmouth Heights at Manalapan is December, with an average of 9h and 24min of daylight.
On the first day of December in Monmouth Heights at Manalapan, sunrise is at 7:01 am and sunset at 4:31 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 4:41 pm EST.

Sunshine

In December, the average sunshine is 5.1h.

UV index

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for average individuals.
Note: An average maximum UV index of 2 in December leads to these recommendations:
Extended time in the sun generally does not harm most, but those with sensitive skin, infants, and children should always be protected. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is it in Monmouth Heights at Manalapan in December?

In Monmouth Heights at Manalapan, 43.7°F (6.5°C) is the average high-temperature and 34.2°F (1.2°C) is the average low-temperature during December. The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which factors the actual air temperature with the relative humidity, in August is calculated to be 86°F (30°C).

What is the average humidity in December in Monmouth Heights at Manalapan?

In Monmouth Heights at Manalapan, the average relative humidity in December is 76%.

What is the wettest month in Monmouth Heights at Manalapan?

The month with the most rainfall in Monmouth Heights at Manalapan, New Jersey, is December, when the rain falls for 12.1 days and typically aggregates up to 3.35" (85mm) of precipitation.

How much does it rain in Monmouth Heights at Manalapan in December?

In Monmouth Heights at Manalapan, New Jersey, during December, the rain falls for 12.1 days and regularly aggregates up to 3.35" (85mm) of precipitation.

How much does it snow in Monmouth Heights at Manalapan in December?

In Monmouth Heights at Manalapan, in December, during 3.5 snowfall days, 1.46" (37mm) of snow is typically accumulated.

What is the month with the shortest days in Monmouth Heights at Manalapan?

With an average of 9h and 24min of daylight, December has the shortest days of the year in Monmouth Heights at Manalapan.

What is the average length of the day in December in Monmouth Heights at Manalapan?

In Monmouth Heights at Manalapan, the average day length in December is 9h and 22min.

What time are sunrise and sunset in December in Monmouth Heights at Manalapan?

In December, on the first day of the month, sunrise is at 7:01 am and sunset at 4:31 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 4:41 pm EST.

How long on average sun shines in December in Monmouth Heights at Manalapan?

In Monmouth Heights at Manalapan, the average sunshine duration in December is 5.1h.

When is the lowest UV index in Monmouth Heights at Manalapan?

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

What is the UV index reading in December in Monmouth Heights at Manalapan?

In Monmouth Heights at Manalapan, New Jersey, the average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's 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
Monmouth Heights at Manalapan, NJ

Average temperature in December - Monmouth Heights at Manalapan, NJ
  • Average high temperature in December: 43.7°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 (37°F).

  • Average low temperature in December: 34.2°F

The month with the highest average low temperature is July (69.1°F).
The coldest month (with the lowest average low temperature) is January (26.4°F).

Average pressure in December
Monmouth Heights at Manalapan, NJ

Average pressure in December - Monmouth Heights at Manalapan, NJ
  • Average pressure in December: 30.08"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).

Average wind speed in December
Monmouth Heights at Manalapan, NJ

Average wind speed in December - Monmouth Heights at Manalapan, NJ
  • Average wind speed in December: 9.5mph

The windiest months (with the highest average wind speed) are January and March (10.1mph).
The calmest month (with the lowest average wind speed) is July (6.5mph).

Average humidity in December
Monmouth Heights at Manalapan, NJ

Average humidity in December - Monmouth Heights at Manalapan, NJ
  • Average humidity in December: 76%

The months with the highest relative humidity are May and June (78%).
The months with the lowest relative humidity are January, March, April, August and November (74%).

Average rainfall in December
Monmouth Heights at Manalapan, NJ

Average rainfall in December - Monmouth Heights at Manalapan, NJ
  • Average rainfall in December: 3.35"

The wettest month (with the highest rainfall) is December (3.35").
The driest month (with the least rainfall) is September (1.69").

Average rainfall days in December
Monmouth Heights at Manalapan, NJ

Average rainfall days in December - Monmouth Heights at Manalapan, NJ
  • Average rainfall days in December: 12.1 days

The month with the highest number of rainy days is July (16.4 days).
The months with the least rainy days are January and November (9.8 days).

Average snowfall in December
Monmouth Heights at Manalapan, NJ

Average snowfall in December - Monmouth Heights at Manalapan, NJ
  • Average snowfall in December: 1.46"

The month with the highest snowfall is March (2.4").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in December
Monmouth Heights at Manalapan, NJ

Average snowfall days in December - Monmouth Heights at Manalapan, NJ
  • Average snowfall days in December: 3.5 days

The month with the highest number of snowfall days is January (5.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in December /
Average sunshine in December
Monmouth Heights at Manalapan, NJ

Average daylight in December / Average sunshine in December - Monmouth Heights at Manalapan, 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 42min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).

Average sunshine days in December
Monmouth Heights at Manalapan, NJ

Average sunshine days in December - Monmouth Heights at Manalapan, NJ
  • Average sunshine days in December: 15.7 days

The month with the most sunshine days is November (18.3 days).
The month with the least sunshine days is June (12.3 days).

Average UV index in December
Monmouth Heights at Manalapan, NJ

Average UV index in December - Monmouth Heights at Manalapan, 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
Monmouth Heights at Manalapan, NJ

Average cloud cover in December - Monmouth Heights at Manalapan, 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 29).

Average visibility in December
Monmouth Heights at Manalapan, NJ

Average visibility in December - Monmouth Heights at Manalapan, 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).

Monmouth Heights at Manalapan, New Jersey, USA

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