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 average high-temperature drops in December, from November's frosty 48°F (8.9°C) to a wintry 38.7°F (3.7°C). During the month of December, DeKays anticipates a mean low-temperature of 26.8°F (-2.9°C).Humidity
The months with the highest humidity are February, October and December, with an average relative humidity of 82%.Rainfall
In December, the rain falls for 9.4 days. Throughout December, 2.52" (64mm) of precipitation is accumulated. In DeKays, during the entire year, the rain falls for 149.5 days and collects up to 28.23" (717mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In DeKays, during December, snow falls for 5.5 days and regularly aggregates up to 3.5" (89mm) of snow. Throughout the year, there are 30.6 snowfall days, and 19.53" (496mm) of snow is accumulated.Daylight
December has the shortest days of the year in DeKays, 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 4:29 pm. On the last day of December, sunrise is at 7:23 am and sunset at 4:38 pm EST.
Sunshine
In DeKays, the average sunshine in December is 4.6h.UV index
With an average maximum UV index of 1, December is the month with the lowest UV index in DeKays. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for average individuals.Note: In December, an average UV index of 1 transforms into the following instructions:
Many can withstand an hour in the sun without burning, yet children must always have protection against sunlight. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Be prepared! The intensity of the Sun's UV radiation can be amplified nearly double due to snow reflection.
Frequently asked questions
Is December cold in DeKays?
What are the most humid months in DeKays?
What is the average humidity in December in DeKays?
How many days does it rain in December in DeKays?
How many days does it snow in December in DeKays?
What is the month with the shortest days in DeKays?
What is the average length of the day in December in DeKays?
What time are sunrise and sunset in December in DeKays?
How long on average sun shines in December in DeKays?
What is the month with the lowest UV index in DeKays?
What is the UV index reading in December in DeKays?
Average temperature in December
DeKays, NJ
- Average high temperature in December: 38.7°F
The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is January (32.5°F).
- Average low temperature in December: 26.8°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 (19.8°F).
Average pressure in December
DeKays, 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
DeKays, NJ
- Average wind speed in December: 7mph
The windiest month (with the highest average wind speed) is March (7.8mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in December
DeKays, NJ
- Average humidity in December: 82%
The months with the highest relative humidity are February, October and December (82%).
The month with the lowest relative humidity is April (76%).
Average rainfall in December
DeKays, NJ
- Average rainfall in December: 2.52"
The wettest month (with the highest rainfall) is July (3.31").
The driest month (with the least rainfall) is January (1.61").
Average rainfall days in December
DeKays, NJ
- Average rainfall days in December: 9.4 days
The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is January (6.3 days).
Average snowfall in December
DeKays, NJ
- Average snowfall in December: 3.5"
The month with the highest snowfall is February (4.92").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
DeKays, NJ
- Average snowfall days in December: 5.5 days
The month with the highest number of snowfall days is February (7.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
DeKays, 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 12min).
Average sunshine days in December
DeKays, NJ
- Average sunshine days in December: 17.8 days
The months with the most sunshine days are January and November (18.8 days).
The month with the least sunshine days is July (11.8 days).
Average UV index in December
DeKays, 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
DeKays, NJ
- Average cloud cover in December: 51
The month with the most cloud cover is February (Cloud cover 53).
The months with the least cloud cover are July and August (Cloud cover 37).
Average visibility in December
DeKays, 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).
DeKays, New Jersey, USA
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