December weather forecast and climate
Manville, NJ

Weather in December

December, the first month of the winter, in Manville, is still a cold month, with average temperature varying between 42.3°F (5.7°C) and 30.6°F (-0.8°C).

Temperature

In Manville, the average high-temperature marginally drops, from a fresh 50.9°F (10.5°C) in November, to a cold 42.3°F (5.7°C). In December, in Manville, the average low-temperature is 30.6°F (-0.8°C).

Humidity

February, October and December, with an average relative humidity of 79%, are most humid months in Manville.

Rainfall

December is the month with the most rainfall. Rain falls for 10.9 days and accumulates 2.91" (74mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall in Manville. In Manville, during 4 snowfall days, 1.46" (37mm) of snow is typically accumulated. In Manville, during the entire year, snow falls for 23.8 days, and aggregates up to 9.53" (242mm) of snow.

Daylight

The month with the shortest days is December, with an average of 9.3h of daylight.

Sunshine

In Manville, the average sunshine in December is 4.8h.

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 reading of 2, and below, represents a minimal health hazard from the exposure to the Sun's UV rays for the ordinary person.
Note: The average daily UV index of 2 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.
[Resources]

FAQ

What is the temperature in December in Manville?

In Manville, in December, the average high-temperature is 42.3°F (5.7°C), and the average low-temperature is 30.6°F (-0.8°C).

What is the most humid month in Manville?

February, October and December, with an average relative humidity of 79%, are most humid months in Manville.

What is the average humidity in December in Manville?

In December, the average relative humidity is 79%.

How much does it rain in Manville in December?

In Manville, in December, it is raining for 10.9 days, with typically 2.91" (74mm) of accumulated precipitation.

What is the rainiest month in Manville?

December is the month with the most rainfall. Rain falls for 10.9 days and accumulates 2.91" (74mm) of precipitation.

How many days does it snow in December in Manville?

In Manville, New Jersey, during December, snow falls for 4 days and regularly aggregates up to 1.46" (37mm) of snow.

What is the month with the shortest days in Manville?

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

How many hours of daylight does Manville have in December?

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

How long on average sun shines in December in Manville?

The average sunshine in December in Manville is 4.8h.

What are the months with the lowest UV index in Manville?

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 Manville?

The average daily maximum UV index in December in Manville is 2. A UV Index of 2, and less, symbolizes a low health threat from the exposure to the Sun's UV rays.

Average temperature in December
Manville, NJ

Average temperature in December - Manville, NJ
  • Average high temperature in December: 42.3°F

The warmest month (with the highest average high temperature) is July (84.2°F).
The month with the lowest average high temperature is January (35.6°F).

  • Average low temperature in December: 30.6°F

The month with the highest average low temperature is July (66°F).
The coldest month (with the lowest average low temperature) is January (23.2°F).

[Resources]

Average pressure in December
Manville, NJ

Average pressure in December - Manville, 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").

[Resources]

Average wind speed in December
Manville, NJ

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

The windiest month (with the highest average wind speed) is March (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

[Resources]

Average humidity in December
Manville, NJ

Average humidity in December - Manville, NJ
  • Average humidity in December: 79%

Months with the highest relative humidity are February, October and December (79%).
The month with the lowest relative humidity is April (74%).

[Resources]

Average rainfall in December
Manville, NJ

Average rainfall in December - Manville, NJ
  • Average rainfall in December: 2.91"

The wettest month (with the highest rainfall) is December (2.91").
The driest month (with the least rainfall) is September (1.54").

[Resources]

Average rainfall days in December
Manville, NJ

Average rainfall days in December - Manville, NJ
  • Average rainfall days in December: 10.9 days

The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is February (9 days).

[Resources]

Average snowfall in December
Manville, NJ

Average snowfall in December - Manville, NJ
  • Average snowfall in December: 1.46"

The month with the highest snowfall is March (2.83").
Months with the least snowfall are June, July, August and September (0").

[Resources]

Average snowfall days in December
Manville, NJ

Average snowfall days in December - Manville, NJ
  • Average snowfall days in December: 4 days

The month with the highest number of snowfall days is January (6.8 days).
Months with the least snowfall days are June, July, August and September (0 days).

[Resources]

Average daylight in December /
Average sunshine in December
Manville, NJ

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

The month with the longest days is June (Average daylight: 15h).
The month with the shortest days is December (Average daylight: 9.3h).

  • Average sunshine in December: 4.8h

The month with the most sunshine is July (Average sunshine: 10.4h).
The month with the least sunshine is February (Average sunshine: 4.6h).

[Resources]

Average sunshine days in December
Manville, NJ

Average sunshine days in December - Manville, NJ
  • Average sunshine days in December: 16.3 days

The month with the most sunshine days is November (19.3 days).
The month with the least sunshine days is June (11.7 days).

[Resources]

Average UV index in December
Manville, NJ

Average UV index in December - Manville, 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, March, November and December (UV index 2).

[Resources]

Average cloud cover in December
Manville, NJ

Average cloud cover in December - Manville, NJ
  • Average cloud cover in December: 49

Months with the most cloud cover are February and December (Cloud cover 49).
Months with the least cloud cover are July and August (Cloud cover 34).

[Resources]

Average visibility in December
Manville, NJ

Average visibility in December - Manville, NJ
  • Average visibility in December: 6mi

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

[Resources]