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
A shift in Sewell's weather is observed as November turns into December, with the average high temperature reducing from a cool 53.2°F (11.8°C) to a chilly 44.1°F (6.7°C). Sewell experiences a steady low-temperature of 32.9°F (0.5°C) throughout December.Humidity
October and December, with an average relative humidity of 77%, are the most humid months.Rainfall
In Sewell, during December, the rain falls for 7.1 days and regularly aggregates up to 0.91" (23mm) of precipitation. Throughout the year, in Sewell, there are 113.4 rainfall days, and 9.25" (235mm) of precipitation is accumulated.Snowfall
January through April, November and December are months with snowfall in Sewell. In Sewell, in December, snow falls for 1.7 days, with typically accumulated 0.12" (3mm) of snow. Throughout the year, there are 10.9 snowfall days, and 1.65" (42mm) of snow is accumulated.Daylight
December has the shortest days of the year, 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 4:36 pm. On the last day of December, in Sewell, sunrise is at 7:21 am and sunset at 4:46 pm EST.
Sunshine
The average sunshine in December in Sewell is 5.1h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: The average daily UV index of 2 in December transforms into the following instructions:
Although prolonged sun exposure does not typically bother most people, children, babies, and those with sensitive skin should always have protection. The solar radiation around mid-day is intense; avoid the Sun and stay safe. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
Frequently asked questions
How cold is December in Sewell?
What is the most humid month in Sewell?
What is the average humidity in December in Sewell?
How many days does it rain in December in Sewell?
How much does it snow in Sewell in December?
What is the month with the shortest days in Sewell?
How many hours of daylight does Sewell have in December?
When are sunrise and sunset in December in Sewell?
How long on average sun shines in December in Sewell?
What are the months with the lowest UV index in Sewell?
What is the UV index intensity in December in Sewell?
Average temperature in December
Sewell, NJ
- Average high temperature in December: 44.1°F
The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (37.9°F).
- Average low temperature in December: 32.9°F
The month with the highest average low temperature is July (69.1°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).
Average pressure in December
Sewell, 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
Sewell, NJ
- Average wind speed in December: 7.8mph
The windiest months (with the highest average wind speed) are March and April (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).
Average humidity in December
Sewell, NJ
- Average humidity in December: 77%
The months with the highest relative humidity are October and December (77%).
The month with the lowest relative humidity is April (71%).
Average rainfall in December
Sewell, NJ
- Average rainfall in December: 0.91"
The wettest month (with the highest rainfall) is August (1.1").
The driest month (with the least rainfall) is January (0.51").
Average rainfall days in December
Sewell, NJ
- Average rainfall days in December: 7.1 days
The month with the highest number of rainy days is July (13.2 days).
The month with the least rainy days is November (6.3 days).
Average snowfall in December
Sewell, NJ
- Average snowfall in December: 0.12"
The month with the highest snowfall is February (0.59").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Sewell, NJ
- Average snowfall days in December: 1.7 days
The month with the highest number of snowfall days is January (3.5 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
Sewell, 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 1min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).
Average sunshine days in December
Sewell, NJ
- Average sunshine days in December: 22 days
The month with the most sunshine days is November (22.5 days).
The month with the least sunshine days is July (14.7 days).
Average UV index in December
Sewell, 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
Sewell, NJ
- Average cloud cover in December: 45
The months with the most cloud cover are February and March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 29).
Average visibility in December
Sewell, 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).
Sewell, New Jersey, USA
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