Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
The shift from November to December coincides with a small decrease in the average high-temperature, down to a frosty 45.3°F (7.4°C) from a cool 53.8°F (12.1°C). An average nighttime temperature of 34.2°F (1.2°C) is witnessed throughout December.Humidity
The average relative humidity in December is 77%.Rainfall
In Richland, in December, it is raining for 9.2 days, with typically 1.5" (38mm) of accumulated precipitation. Throughout the year, in Richland, there are 119.7 rainfall days, and 15" (381mm) of precipitation is accumulated.Snowfall
January through April, November and December are months with snowfall in Richland. In December, in Richland, it is snowing for 2.3 days. Throughout December, 0.51" (13mm) of snow is accumulated. In Richland, during the entire year, snow falls for 13.6 days and aggregates up to 4.29" (109mm) of snow.Daylight
December has the shortest days of the year in Richland, with an average of 9h and 24min of daylight.On the first day of December in Richland, sunrise is at 7:01 am and sunset at 4:36 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 4:45 pm EST.
Sunshine
In Richland, the average sunshine in December is 5h.UV index
January, February, 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 vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: An average UV index of 2 in December transforms into this advice:
Despite the majority tolerating prolonged sun exposure, those with sensitive skin, infants, and children demand continual protection. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Opt for tightly woven and loose clothing to enhance protection from the Sun. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
Frequently asked questions
What is the temperature in December in Richland?
What is the average humidity in December in Richland?
How much does it rain in Richland in December?
How many days does it snow in December in Richland?
What is the month with the shortest days in Richland?
How many hours of daylight does Richland have in December?
When is the sunrise / sunset in December in Richland?
How long on average sun shines in December in Richland?
What is the month with the lowest UV index in Richland?
How high is the UV index in December in Richland?
Average temperature in December
Richland, NJ
- Average high temperature in December: 45.3°F
The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (39°F).
- Average low temperature in December: 34.2°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 (27°F).
Average pressure in December
Richland, 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).
Average wind speed in December
Richland, NJ
- Average wind speed in December: 7.9mph
The windiest month (with the highest average wind speed) is April (8.9mph).
The calmest month (with the lowest average wind speed) is August (5.9mph).
Average humidity in December
Richland, NJ
- Average humidity in December: 77%
The months with the highest relative humidity are June, September and October (79%).
The month with the lowest relative humidity is April (72%).
Average rainfall in December
Richland, NJ
- Average rainfall in December: 1.5"
The wettest month (with the highest rainfall) is July (1.77").
The driest month (with the least rainfall) is January (0.75").
Average rainfall days in December
Richland, NJ
- Average rainfall days in December: 9.2 days
The month with the highest number of rainy days is July (14.5 days).
The month with the least rainy days is January (6.3 days).
Average snowfall in December
Richland, NJ
- Average snowfall in December: 0.51"
The month with the highest snowfall is January (1.38").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Richland, NJ
- Average snowfall days in December: 2.3 days
The month with the highest number of snowfall days is January (4.5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Richland, 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 0min
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 48min).
Average sunshine days in December
Richland, NJ
- Average sunshine days in December: 20 days
The month with the most sunshine days is November (21.7 days).
The month with the least sunshine days is July (14.8 days).
Average UV index in December
Richland, 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).
Average cloud cover in December
Richland, NJ
- Average cloud cover in December: 47
The months with the most cloud cover are February and March (Cloud cover 48).
The months with the least cloud cover are July and August (Cloud cover 31).
Average visibility in December
Richland, 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).
Richland, New Jersey, USA
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