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 transition into December involves a decrease in the average high-temperature, falling from a fresh 50.2°F (10.1°C) in November to a cold 41°F (5°C). In December, Clinton reports a consistent average low-temperature of 29.3°F (-1.5°C) during the nights.Humidity
February, October and December, with an average relative humidity of 80%, are the most humid months.Rainfall
In Clinton, New Jersey, in December, it is raining for 11.2 days, with typically 2.28" (58mm) of accumulated precipitation. Throughout the year, there are 152.5 rainfall days, and 23.78" (604mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In December, it is snowing for 3.8 days. Throughout December, 1.57" (40mm) of snow is accumulated. Throughout the year, in Clinton, there are 24.8 snowfall days, and 8.66" (220mm) of snow is accumulated.Daylight
December has the shortest days of the year, 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 4:33 pm. On the last day of December, sunrise is at 7:23 am and sunset at 4:42 pm EST.
Sunshine
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 of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: The UV index of 2 in December translates into these instructions:
In contrast to children, who must always be shielded from the sun, most people can tolerate up to an hour of sun exposure without any burns. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December?
What is the most humid month?
What is the average humidity in December?
How many days does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Clinton have in December?
When are sunrise and sunset in December?
How long on average sun shines in December?
What is the month with the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Clinton, NJ
- Average high temperature in December: 41°F
The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (35.1°F).
- Average low temperature in December: 29.3°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (22.3°F).
Average pressure in December
Clinton, 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 (29.93"Hg).
Average wind speed in December
Clinton, NJ
- Average wind speed in December: 7.5mph
The windiest month (with the highest average wind speed) is March (8.3mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in December
Clinton, NJ
- Average humidity in December: 80%
The months with the highest relative humidity are February, October and December (80%).
The month with the lowest relative humidity is April (75%).
Average rainfall in December
Clinton, NJ
- Average rainfall in December: 2.28"
The wettest month (with the highest rainfall) is July (2.6").
The driest month (with the least rainfall) is September (1.26").
Average rainfall days in December
Clinton, NJ
- Average rainfall days in December: 11.2 days
The month with the highest number of rainy days is July (16.7 days).
The month with the least rainy days is January (8.1 days).
Average snowfall in December
Clinton, NJ
- Average snowfall in December: 1.57"
The month with the highest snowfall is March (2.4").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Clinton, NJ
- Average snowfall days in December: 3.8 days
The month with the highest number of snowfall days is January (7.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Clinton, 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
Clinton, NJ
- Average sunshine days in December: 16.5 days
The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is July (11.8 days).
Average UV index in December
Clinton, 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
Clinton, 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
Clinton, NJ
- Average visibility in December: 6mi
The months with the highest visibility are January, March, April, July, November and December (6mi).
The months with the lowest visibility are February, May, June, August, September and October (5mi).
Clinton, New Jersey, USA
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