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 arrival of December is marked by a minor reduction in average high-temperature, sliding from a fresh 50.9°F (10.5°C) in November to a cold 42.3°F (5.7°C). In Raritan, in December, the average low-temperature is a subzero cold 30.6°F (-0.8°C).Humidity
February, October and December, with an average relative humidity of 79%, are the most humid months.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 Raritan. In December, it is snowing for 4 days. Throughout December, 1.46" (37mm) of snow is accumulated. In Raritan, during the entire year, snow falls for 23.8 days and aggregates up to 9.53" (242mm) of snow.Daylight
With an average of 9h and 18min of daylight, December has the shortest days of the year in Raritan.On the first day of December, sunrise is at 7:03 am and sunset at 4:32 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 4:41 pm EST.
Sunshine
In Raritan, the average sunshine in December is 4.8h.UV index
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for the average person.Note: In December, the average maximum UV index of 2 translates into the following recommendations:
Prolonged sun exposure generally does not trouble most people. However, it is vital to ensure protection for babies, children, and individuals with sensitive skin. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in Raritan in December?
What are the most humid months in Raritan?
What is the average humidity in December in Raritan?
What is the wettest month in Raritan?
How many days does it rain in December in Raritan?
How much does it snow in Raritan in December?
What is the month with the shortest days in Raritan?
What is the average length of the day in December in Raritan?
When is the sunrise / sunset in December in Raritan?
How many hours of sunshine does Raritan have in December?
What are the months with the lowest UV index in Raritan?
What is the UV index intensity in December in Raritan?
Average temperature in December
Raritan, 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).
Average pressure in December
Raritan, 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).
Average wind speed in December
Raritan, 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).
Average humidity in December
Raritan, NJ
- Average humidity in December: 79%
The months with the highest relative humidity are February, October and December (79%).
The month with the lowest relative humidity is April (74%).
Average rainfall in December
Raritan, 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").
Average rainfall days in December
Raritan, 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).
Average snowfall in December
Raritan, NJ
- Average snowfall in December: 1.46"
The month with the highest snowfall is March (2.83").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Raritan, NJ
- Average snowfall days in December: 4 days
The month with the highest number of snowfall days is January (6.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Raritan, 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 24min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in December
Raritan, 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).
Average UV index in December
Raritan, 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).
Average cloud cover in December
Raritan, NJ
- Average cloud cover in December: 49
The months with the most cloud cover are February and December (Cloud cover 49).
The months with the least cloud cover are July and August (Cloud cover 34).
Average visibility in December
Raritan, 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).
Raritan, New Jersey, USA
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