December weather forecast
Osbornes Mills, NJ

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Weather in December

The first month of the winter, December, is also a frosty month in Osbornes Mills, New Jersey, with an average temperature varying between 44.2°F (6.8°C) and 35.8°F (2.1°C).

Temperature

Osbornes Mills's December weather shows a modest shift in high-temperatures, falling from November's cool 52.5°F (11.4°C) to a frosty 44.2°F (6.8°C). Osbornes Mills experiences a subtle drop in temperature during the December nights, recording an average of 35.8°F (2.1°C).

Humidity

The average relative humidity in December is 76%.

Rainfall

In Osbornes Mills, in December, during 12.3 rainfall days, 3.43" (87mm) of precipitation is typically accumulated. In Osbornes Mills, during the entire year, the rain falls for 161.4 days and collects up to 32.64" (829mm) of precipitation.

Snowfall

January through April, October through December are months with snowfall. The months with the most snowfall in Osbornes Mills are January, March and December, with an average 1.1" (28mm) of accumulated snow.

Daylight

December has the shortest days of the year, with an average of 9h and 24min of daylight.
On the first day of the month, sunrise is at 6:59 am and sunset at 4:31 pm. On the last day of December, sunrise is at 7:18 am and sunset at 4:40 pm EST.

Sunshine

The average sunshine in December in Osbornes Mills 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 unprotected exposure to Sun's UV rays for the average person.
Note: In December, the maximum UV index of 2 suggests this advice:
Extended sunlight exposure does not pose significant problems for most people, except for children, infants, and people with fair skin who always need shielding. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
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Frequently asked questions

How cold is it in Osbornes Mills in December?

In Osbornes Mills, in December, the average high-temperature is 44.2°F (6.8°C), and the average low-temperature is 35.8°F (2.1°C).

What is the average humidity in December in Osbornes Mills?

The average relative humidity in December is 76%.

How much does it rain in Osbornes Mills in December?

In December, in Osbornes Mills, New Jersey, the rain falls for 12.3 days. Throughout December, 3.43" (87mm) of precipitation is accumulated.

What is the snowiest month in Osbornes Mills?

The months with the most snowfall are January, March and December, with an average 1.1" (28mm) of accumulated snow.

How many days does it snow in December in Osbornes Mills?

In Osbornes Mills, New Jersey, during December, snow falls for 3.1 days and regularly aggregates up to 1.1" (28mm) of snow.

What is the month with the shortest days in Osbornes Mills?

With an average of 9h and 24min of daylight, December has the shortest days of the year in Osbornes Mills.

How many hours of daylight does Osbornes Mills have in December?

In December, the average day length in Osbornes Mills, New Jersey, is 9h and 22min.

What time are sunrise and sunset in December in Osbornes Mills?

In December, on the first day of the month, sunrise is at 6:59 am and sunset at 4:31 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 4:40 pm EST.

How many hours of sunshine does Osbornes Mills have in December?

In Osbornes Mills, New Jersey, the average sunshine duration in December is 5.1h.

What are the months with the lowest UV index in Osbornes Mills?

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

How high is the UV index in December in Osbornes Mills?

The average daily maximum UV index in December in Osbornes Mills is 2. A UV Index reading of 2, and below, represents a low health risk from unprotected exposure to 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
Osbornes Mills, NJ

Average temperature in December - Osbornes Mills, NJ
  • Average high temperature in December: 44.2°F

The warmest month (with the highest average high temperature) is July (80.4°F).
The month with the lowest average high temperature is January (38.1°F).

  • Average low temperature in December: 35.8°F

The month with the highest average low temperature is July (70.5°F).
The coldest month (with the lowest average low temperature) is January (28.6°F).

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Average pressure in December
Osbornes Mills, NJ

Average pressure in December - Osbornes Mills, 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).

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Average wind speed in December
Osbornes Mills, NJ

Average wind speed in December - Osbornes Mills, NJ
  • Average wind speed in December: 11.3mph

The windiest month (with the highest average wind speed) is January (12mph).
The calmest month (with the lowest average wind speed) is July (7.7mph).

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Average humidity in December
Osbornes Mills, NJ

Average humidity in December - Osbornes Mills, NJ
  • Average humidity in December: 76%

The month with the highest relative humidity is May (80%).
The months with the lowest relative humidity are January, March and November (74%).

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Average rainfall in December
Osbornes Mills, NJ

Average rainfall in December - Osbornes Mills, NJ
  • Average rainfall in December: 3.43"

The wettest month (with the highest rainfall) is July (3.7").
The driest month (with the least rainfall) is January (1.93").

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Average rainfall days in December
Osbornes Mills, NJ

Average rainfall days in December - Osbornes Mills, NJ
  • Average rainfall days in December: 12.3 days

The month with the highest number of rainy days is July (17.6 days).
The month with the least rainy days is November (9.2 days).

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Average snowfall in December
Osbornes Mills, NJ

Average snowfall in December - Osbornes Mills, NJ
  • Average snowfall in December: 1.1"

The months with the highest snowfall are January, March and December (1.1").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in December
Osbornes Mills, NJ

Average snowfall days in December - Osbornes Mills, NJ
  • Average snowfall days in December: 3.1 days

The month with the highest number of snowfall days is January (4.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight in December /
Average sunshine in December
Osbornes Mills, NJ

Average daylight in December / Average sunshine in December - Osbornes Mills, 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 48min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).

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Average sunshine days in December
Osbornes Mills, NJ

Average sunshine days in December - Osbornes Mills, NJ
  • Average sunshine days in December: 15.5 days

The month with the most sunshine days is November (18.4 days).
The month with the least sunshine days is July (11.3 days).

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Average UV index in December
Osbornes Mills, NJ

Average UV index in December - Osbornes Mills, 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).

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Average cloud cover in December
Osbornes Mills, NJ

Average cloud cover in December - Osbornes Mills, NJ
  • Average cloud cover in December: 46

The month with the most cloud cover is February (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 27).

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Average visibility in December
Osbornes Mills, NJ

Average visibility in December - Osbornes Mills, 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).

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Osbornes Mills, New Jersey, USA

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