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 start of December comes with a reduction in the average high-temperature, receding from a frosty 49.3°F (9.6°C) in November to an icy 39.9°F (4.4°C). An average low-temperature of 28.2°F (-2.1°C) is expected during December.Humidity
In Flanders, the average relative humidity in December is 80%.Rainfall
December is the month with the most rainfall. Rain falls for 11.1 days and accumulates 3.27" (83mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In Flanders, in December, during 5.2 snowfall days, 3.5" (89mm) of snow is typically accumulated. In Flanders, during the entire year, snow falls for 34.7 days and aggregates up to 20.71" (526mm) of snow.Daylight
The month with the shortest days in Flanders is December, with an average of 9h and 18min of daylight.On the first day of December, sunrise is at 7:04 am and sunset at 4:31 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 4:41 pm EST.
Sunshine
In Flanders, the average sunshine in December is 4.8h.UV index
The months with the lowest UV index in Flanders 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 rays for average individuals.Note: A maximum high UV index of 2 in December translates into the following recommendations:
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. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Foresee this! The reflection from snow can nearly double the intensity of UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it cold in Flanders during December?
What is the average humidity in December in Flanders?
What is the rainiest month in Flanders?
How much does it rain in Flanders in December?
How many days does it snow in December in Flanders?
What is the month with the shortest days in Flanders?
What is the average length of the day in December in Flanders?
When are sunrise and sunset in December in Flanders?
How long on average sun shines in December in Flanders?
What is the month with the lowest UV index in Flanders?
How high is the UV index in December in Flanders?
Average temperature in December
Flanders, NJ
- Average high temperature in December: 39.9°F
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (33.4°F).
- Average low temperature in December: 28.2°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (21°F).
Average pressure in December
Flanders, 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
Flanders, NJ
- Average wind speed in December: 7.3mph
The windiest month (with the highest average wind speed) is March (8.1mph).
The calmest months (with the lowest average wind speed) are July and August (5mph).
Average humidity in December
Flanders, NJ
- Average humidity in December: 80%
The months with the highest relative humidity are February and October (81%).
The month with the lowest relative humidity is April (76%).
Average rainfall in December
Flanders, NJ
- Average rainfall in December: 3.27"
The wettest month (with the highest rainfall) is December (3.27").
The driest month (with the least rainfall) is September (1.02").
Average rainfall days in December
Flanders, NJ
- Average rainfall days in December: 11.1 days
The month with the highest number of rainy days is April (15.8 days).
The month with the least rainy days is January (7.5 days).
Average snowfall in December
Flanders, NJ
- Average snowfall in December: 3.5"
The month with the highest snowfall is March (5.24").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Flanders, NJ
- Average snowfall days in December: 5.2 days
The month with the highest number of snowfall days is February (9.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Flanders, 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 5min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).
Average sunshine days in December
Flanders, NJ
- Average sunshine days in December: 16.2 days
The month with the most sunshine days is September (19.6 days).
The month with the least sunshine days is April (12.3 days).
Average UV index in December
Flanders, NJ
- Average UV index in December: 2
The months with the highest UV index are June and July (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
Flanders, NJ
- Average cloud cover in December: 49
The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 34).
Average visibility in December
Flanders, NJ
- Average visibility in December: 6mi
The months with the highest visibility are April, November and December (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September and October (5mi).
Flanders, New Jersey, USA
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