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
Stepping into December, Pennington observes a temperature decline, with the average high falling from November's fresh 52°F (11.1°C) to a chilly 42.8°F (6°C). The temperature in Pennington, New Jersey, lowers to an average of 31.5°F (-0.3°C) during December nights.Humidity
February, October and December, with an average relative humidity of 78%, are the most humid months in Pennington, New Jersey.Rainfall
In December, the rain falls for 8.7 days. Throughout December, 1.42" (36mm) of precipitation is accumulated. In Pennington, during the entire year, the rain falls for 138.1 days and collects up to 16.5" (419mm) of precipitation.Snowfall
January through May, November and December are months with snowfall. In Pennington, in December, during 2.8 snowfall days, 0.59" (15mm) of snow is typically accumulated. Throughout the year, there are 15.6 snowfall days, and 2.8" (71mm) of snow is accumulated.Daylight
The month with the shortest days in Pennington is December, with an average of 9h and 24min of daylight.On the first day of the month, sunrise is at 7:03 am and sunset at 4:33 pm. On the last day of December, in Pennington, sunrise is at 7:21 am and sunset at 4:43 pm EST.
Sunshine
In December, the average sunshine in Pennington is 5h.UV index
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Pennington. A UV Index value of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: A typical high UV index of 2 in December suggests the following recommendations:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
Frequently asked questions
How cold is it in Pennington in December?
What are the most humid months in Pennington?
What is the average humidity in December in Pennington?
How many days does it rain in December in Pennington?
How many days does it snow in December in Pennington?
What is the month with the shortest days in Pennington?
What is the average length of the day in December in Pennington?
When is the sunrise / sunset in December in Pennington?
How long on average sun shines in December in Pennington?
What are the months with the lowest UV index in Pennington?
How high is the UV index in December in Pennington?
Average temperature in December
Pennington, NJ
- Average high temperature in December: 42.8°F
The warmest month (with the highest average high temperature) is July (85.1°F).
The month with the lowest average high temperature is January (36.9°F).
- Average low temperature in December: 31.5°F
The month with the highest average low temperature is July (67.3°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).
Average pressure in December
Pennington, 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
Pennington, 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
Pennington, NJ
- Average humidity in December: 78%
The months with the highest relative humidity are February, October and December (78%).
The months with the lowest relative humidity are April and July (73%).
Average rainfall in December
Pennington, NJ
- Average rainfall in December: 1.42"
The wettest month (with the highest rainfall) is July (2.24").
The driest month (with the least rainfall) is January (0.87").
Average rainfall days in December
Pennington, NJ
- Average rainfall days in December: 8.7 days
The month with the highest number of rainy days is July (15.8 days).
The month with the least rainy days is November (7.2 days).
Average snowfall in December
Pennington, NJ
- Average snowfall in December: 0.59"
The month with the highest snowfall is February (0.71").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in December
Pennington, NJ
- Average snowfall days in December: 2.8 days
The month with the highest number of snowfall days is January (4.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Pennington, 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 0min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in December
Pennington, NJ
- Average sunshine days in December: 19 days
The month with the most sunshine days is January (20.7 days).
The month with the least sunshine days is July (12.3 days).
Average UV index in December
Pennington, 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, March, November and December (UV index 2).
Average cloud cover in December
Pennington, NJ
- Average cloud cover in December: 47
The months with the most cloud cover are February and December (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in December
Pennington, NJ
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
Pennington, New Jersey, USA
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