December weather forecast
Richwood, NJ

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Weather in December

December, the first month of the winter in Richwood, is also a frosty month, with an average temperature fluctuating between 32.9°F (0.5°C) and 44.2°F (6.8°C).

Temperature

The onset of December is marked by a decrease in temperature, transitioning from a cool 53.4°F (11.9°C) in November to a frosty 44.2°F (6.8°C). Throughout December, Richwood witnesses a consistent average low-temperature of 32.9°F (0.5°C).

Humidity

In Richwood, the average relative humidity in December is 77%.

Rainfall

December is the month with the most rainfall. Rain falls for 11 days and accumulates 3.35" (85mm) of precipitation.

Snowfall

Months with snowfall are January through May, November and December. In December, in Richwood, it is snowing for 3 days. Throughout December, 1.26" (32mm) of snow is accumulated. In Richwood, during the entire year, snow falls for 17.8 days and aggregates up to 10.28" (261mm) of snow.

Daylight

With an average of 9h and 24min of daylight, December has the shortest days of the year.
On the first day of December in Richwood, sunrise is at 7:03 am and sunset at 4:36 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 4:46 pm EST.

Sunshine

In Richwood, the average sunshine in December is 5.2h.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Richwood. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for the average person.
Note: An average UV index of 2 in December transforms into this advice:
Babies, children, and those with sensitive skin should always avoid extended periods in the sun. Direct Sun exposure should be minimized especially during midday when radiation is most intense. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
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Frequently asked questions

How cold is it in Richwood in December?

The high-temperature in Richwood during December is 44.2°F (6.8°C) and the low-temperature is 32.9°F (0.5°C). The average heat index (a.k.a. 'apparent temperature', 'real feel'), which combines relative humidity and air temperature, in August is evaluated at 89.6°F (32°C).

What is the average humidity in December in Richwood?

In Richwood, the average relative humidity in December is 77%.

What is the rainiest month in Richwood?

The month with the most rainfall in Richwood is December, when the rain falls for 11 days and typically aggregates up to 3.35" (85mm) of precipitation.

How much does it rain in Richwood in December?

In Richwood, in December, during 11 rainfall days, 3.35" (85mm) of precipitation is typically accumulated.

How many days does it snow in December in Richwood?

In Richwood, New Jersey, in December, during 3 snowfall days, 1.26" (32mm) of snow is typically accumulated.

What is the month with the shortest days in Richwood?

With an average of 9h and 24min of daylight, December has the shortest days of the year in Richwood, New Jersey.

What is the average length of the day in December in Richwood?

In December, the average day length in Richwood is 9h and 25min.

What time are sunrise and sunset in December in Richwood?

In December, on the first day of the month, sunrise is at 7:03 am and sunset at 4:36 pm. On the last day of the month, in Richwood, New Jersey, sunrise is at 7:21 am and sunset at 4:46 pm EST.

How many hours of sunshine does Richwood have in December?

In December, the average sunshine duration in Richwood is 5.2h.

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

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

What is the UV index reading in December in Richwood?

In Richwood, the average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to Sun's UV rays.
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
Richwood, NJ

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

The warmest month (with the highest average high temperature) is July (85.3°F).
The month with the lowest average high temperature is January (38.1°F).

  • Average low temperature in December: 32.9°F

The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (26.8°F).

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Average pressure in December
Richwood, NJ

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

The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

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Average wind speed in December
Richwood, NJ

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

The windiest month (with the highest average wind speed) is April (8.7mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).

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Average humidity in December
Richwood, NJ

Average humidity in December - Richwood, NJ
  • Average humidity in December: 77%

The month with the highest relative humidity is October (78%).
The month with the lowest relative humidity is April (71%).

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Average rainfall in December
Richwood, NJ

Average rainfall in December - Richwood, 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 (1.73").

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Average rainfall days in December
Richwood, NJ

Average rainfall days in December - Richwood, NJ
  • Average rainfall days in December: 11 days

The month with the highest number of rainy days is July (16.9 days).
The month with the least rainy days is January (8.8 days).

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Average snowfall in December
Richwood, NJ

Average snowfall in December - Richwood, NJ
  • Average snowfall in December: 1.26"

The month with the highest snowfall is March (3.54").
The months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days in December
Richwood, NJ

Average snowfall days in December - Richwood, NJ
  • Average snowfall days in December: 3 days

The month with the highest number of snowfall days is January (5.5 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

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

Average daylight in December / Average sunshine in December - Richwood, NJ
  • Average daylight in December: 9h and 2min

The month with the longest days is June (Average daylight: 14h and 54min).
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
Richwood, NJ

Average sunshine days in December - Richwood, NJ
  • Average sunshine days in December: 17.9 days

The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is July (11.8 days).

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Average UV index in December
Richwood, NJ

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

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Average cloud cover in December
Richwood, NJ

Average cloud cover in December - Richwood, NJ
  • Average cloud cover in December: 45

The months with the most cloud cover are February and March (Cloud cover 46).
The months with the least cloud cover are July and August (Cloud cover 30).

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Average visibility in December
Richwood, NJ

Average visibility in December - Richwood, 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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Richwood, New Jersey, USA

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