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 commencement of December involves a temperature shift, with the average high-temperature dropping from a chilly 48.4°F (9.1°C) in November to a cold 38.7°F (3.7°C). In Swartswood, December nights witness a steady temperature drop to a subzero cold 27.3°F (-2.6°C).Humidity
The months with the highest humidity are February and December, with an average relative humidity of 82%.Rainfall
In Swartswood, in December, during 11.5 rainfall days, 2.68" (68mm) of precipitation is typically accumulated. In Swartswood, during the entire year, the rain falls for 161.1 days and collects up to 28.98" (736mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In Swartswood, in December, snow falls for 6.5 days, with typically accumulated 2.83" (72mm) of snow. In Swartswood, during the entire year, snow falls for 36.8 days and aggregates up to 17.52" (445mm) of snow.Daylight
With an average of 9h and 18min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:05 am and sunset at 4:31 pm. On the last day of December, sunrise is at 7:24 am and sunset at 4:40 pm EST.
Sunshine
In December, the average sunshine in Swartswood is 4.6h.UV index
The month with the lowest UV index is December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for the ordinary person.Note: In December, a regular UV index of 1 translates into these guidelines:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Be vigilant! The reflective nature of snow can increase the Sun's UV radiation nearly twofold.
Frequently asked questions
Is December cold in Swartswood?
What is the most humid month in Swartswood?
What is the average humidity in December in Swartswood?
How many days does it rain in December in Swartswood?
How much does it snow in Swartswood in December?
What is the month with the shortest days in Swartswood?
How many hours of daylight does Swartswood have in December?
What time are sunrise and sunset in December in Swartswood?
How long on average sun shines in December in Swartswood?
What is the month with the lowest UV index in Swartswood?
How high is the UV index in December in Swartswood?
Average temperature in December
Swartswood, NJ
- Average high temperature in December: 38.7°F
The warmest month (with the highest average high temperature) is July (82.8°F).
The month with the lowest average high temperature is January (33.3°F).
- Average low temperature in December: 27.3°F
The month with the highest average low temperature is July (61.9°F).
The coldest month (with the lowest average low temperature) is January (20.3°F).
Average pressure in December
Swartswood, 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
Swartswood, NJ
- Average wind speed in December: 7.1mph
The windiest month (with the highest average wind speed) is March (7.9mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).
Average humidity in December
Swartswood, NJ
- Average humidity in December: 82%
The months with the highest relative humidity are February and December (82%).
The month with the lowest relative humidity is April (76%).
Average rainfall in December
Swartswood, NJ
- Average rainfall in December: 2.68"
The wettest month (with the highest rainfall) is July (3.03").
The driest month (with the least rainfall) is September (1.54").
Average rainfall days in December
Swartswood, NJ
- Average rainfall days in December: 11.5 days
The months with the highest number of rainy days are May and July (17.3 days).
The month with the least rainy days is January (7.5 days).
Average snowfall in December
Swartswood, NJ
- Average snowfall in December: 2.83"
The months with the highest snowfall are January and February (4.29").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Swartswood, NJ
- Average snowfall days in December: 6.5 days
The month with the highest number of snowfall days is January (10.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Swartswood, NJ
- Average daylight in December: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in December: 4h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is February (Average sunshine: 4h and 18min).
Average sunshine days in December
Swartswood, NJ
- Average sunshine days in December: 15.5 days
The month with the most sunshine days is November (17.2 days).
The month with the least sunshine days is June (11.3 days).
Average UV index in December
Swartswood, NJ
- Average UV index in December: 1
The month with the highest UV index is June (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Swartswood, NJ
- Average cloud cover in December: 51
The month with the most cloud cover is February (Cloud cover 52).
The months with the least cloud cover are July and August (Cloud cover 37).
Average visibility in December
Swartswood, NJ
- Average visibility in December: 5mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October, November and December (5mi).
Swartswood, New Jersey, USA
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