December weather forecast
Prallsville, NJ

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Weather in December

The first month of the winter, December, is also an icy month in Prallsville, New Jersey, with an average temperature varying between 30.7°F (-0.7°C) and 42.4°F (5.8°C).

Temperature

Prallsville experiences a temperature shift at the start of December, with average high-temperatures adjusting from a cool 51.4°F (10.8°C) in November to a cold 42.4°F (5.8°C). In the month of December, the nighttime temperature in Prallsville dips to a steady average of 30.7°F (-0.7°C).

Humidity

In Prallsville, the average relative humidity in December is 78%.

Rainfall

In December, the rain falls for 11.3 days. Throughout December, 2.87" (73mm) of precipitation is accumulated. Throughout the year, there are 158.5 rainfall days, and 28.31" (719mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Prallsville are January through May, October through December. In December, in Prallsville, it is snowing for 3.7 days. Throughout December, 1.42" (36mm) of snow is accumulated. In Prallsville, New Jersey, during the entire year, snow falls for 23 days and aggregates up to 9.45" (240mm) of snow.

Daylight

The month with the shortest days in Prallsville is December, with an average of 9h and 18min of daylight.
On the first day of the month, sunrise is at 7:04 am and sunset at 4:34 pm. On the last day of December, sunrise is at 7:22 am and sunset at 4:43 pm EST.

Sunshine

The average sunshine in December is 4.9h.

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 low threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: The UV index of 2 during December leads to these advisories:
Children necessitate constant protection from sunlight, unlike the majority, who can remain under the sun for about an hour without burning. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Experience reduced UV exposure by about half when donning a wide-brim hat. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
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Frequently asked questions

How cold is it in Prallsville in December?

Prallsville in December has an average high-temperature of 42.4°F (5.8°C) and an average low-temperature of 30.7°F (-0.7°C). The average heat index (a.k.a. 'feels like', 'real feel'), which combines relative humidity and air temperature, in August is appraised at 89.6°F (32°C).

What is the average humidity in December in Prallsville?

The average relative humidity in December in Prallsville, New Jersey, is 78%.

How many days does it rain in December in Prallsville?

In December, in Prallsville, the rain falls for 11.3 days. Throughout December, 2.87" (73mm) of precipitation is accumulated.

How much does it snow in Prallsville in December?

In Prallsville, during December, snow falls for 3.7 days and regularly aggregates up to 1.42" (36mm) of snow.

What is the month with the shortest days in Prallsville?

The month with the shortest days in Prallsville, New Jersey, is December, with an average of 9h and 18min of daylight.

How many hours of daylight does Prallsville have in December?

The average day length in December in Prallsville, New Jersey, is 9h and 21min.

When are sunrise and sunset in December in Prallsville?

On the first day of December in Prallsville, New Jersey, sunrise is at 7:04 am and sunset at 4:34 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 4:43 pm EST.

How many hours of sunshine does Prallsville have in December?

In December, the average sunshine duration is 4.9h.

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

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

What is the UV index reading in December in Prallsville?

In December, the average daily maximum UV index in Prallsville, New Jersey, is 2. A UV Index reading of 2, and below, represents a minimal health vulnerability 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
Prallsville, NJ

Average temperature in December - Prallsville, NJ
  • Average high temperature in December: 42.4°F

The warmest month (with the highest average high temperature) is July (84.9°F).
The month with the lowest average high temperature is January (36.1°F).

  • Average low temperature in December: 30.7°F

The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (23.5°F).

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Average pressure in December
Prallsville, NJ

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

The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

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Average wind speed in December
Prallsville, NJ

Average wind speed in December - Prallsville, NJ
  • Average wind speed in December: 7.7mph

The windiest month (with the highest average wind speed) is March (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).

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Average humidity in December
Prallsville, NJ

Average humidity in December - Prallsville, NJ
  • Average humidity in December: 78%

The months with the highest relative humidity are February and October (79%).
The months with the lowest relative humidity are April and July (74%).

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Average rainfall in December
Prallsville, NJ

Average rainfall in December - Prallsville, NJ
  • Average rainfall in December: 2.87"

The wettest month (with the highest rainfall) is July (2.99").
The driest month (with the least rainfall) is September (1.61").

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Average rainfall days in December
Prallsville, NJ

Average rainfall days in December - Prallsville, NJ
  • Average rainfall days in December: 11.3 days

The months with the highest number of rainy days are May and July (16.8 days).
The month with the least rainy days is November (8.9 days).

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Average snowfall in December
Prallsville, NJ

Average snowfall in December - Prallsville, NJ
  • Average snowfall in December: 1.42"

The month with the highest snowfall is March (2.91").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Prallsville, NJ

Average snowfall days in December - Prallsville, NJ
  • Average snowfall days in December: 3.7 days

The month with the highest number of snowfall days is January (7 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Prallsville, 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 18min).

  • Average sunshine in December: 4h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

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Average sunshine days in December
Prallsville, NJ

Average sunshine days in December - Prallsville, NJ
  • Average sunshine days in December: 16.5 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).

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Average UV index in December
Prallsville, NJ

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

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Average cloud cover in December
Prallsville, NJ

Average cloud cover in December - Prallsville, NJ
  • Average cloud cover in December: 48

The months with the most cloud cover are February and December (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 33).

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Average visibility in December
Prallsville, NJ

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

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

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Prallsville, New Jersey, USA

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