December weather forecastColumbia, NJ
December
Weather in December
December, the first month of the winter in Columbia, is still a cold month, with temperature in the range of an average high of 38.5°F (3.6°C) and an average low of 27.3°F (-2.6°C).Temperature
In Columbia, entering December brings a temperature decrement, reducing from November's frosty 48.4°F (9.1°C) to a cold 38.5°F (3.6°C). The average temperature drops to a subzero cold 27.3°F (-2.6°C) during the night in the month of December.Humidity
February and December, with an average relative humidity of 82%, are the most humid months in Columbia, New Jersey.Rainfall
In Columbia, in December, it is raining for 9.3 days, with typically 2.13" (54mm) of accumulated precipitation. In Columbia, New Jersey, during the entire year, the rain falls for 135.7 days and collects up to 23.74" (603mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In Columbia, in December, during 5.7 snowfall days, 3.35" (85mm) of snow is typically accumulated. In Columbia, New Jersey, during the entire year, snow falls for 33.7 days and aggregates up to 16.65" (423mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 18min of daylight.On the first day of the month, sunrise is at 7:06 am and sunset at 4:33 pm. On the last day of December, sunrise is at 7:24 am and sunset at 4:42 pm EST.
Sunshine
In Columbia, the average sunshine in December is 4.5h.UV index
With an average maximum UV index of 1, December is the month with the lowest UV index in Columbia. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for average individuals.Note: A typical high UV index of 1 in December suggests the following recommendations:
Babies, children, and those with sensitive skin should always avoid extended periods in the sun. To guard against the harmful effects of the Sun, minimize exposure during midday. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Columbia, NJ
- Average high temperature in December: 38.5°F
The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (32.9°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
Columbia, 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 (29.94"Hg).
Average wind speed in December
Columbia, NJ
- Average wind speed in December: 7.2mph
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
Columbia, 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
Columbia, NJ
- Average rainfall in December: 2.13"
The wettest month (with the highest rainfall) is July (2.48").
The driest month (with the least rainfall) is September (1.22").
Average rainfall days in December
Columbia, NJ
- Average rainfall days in December: 9.3 days
The month with the highest number of rainy days is May (15.5 days).
The month with the least rainy days is January (5.8 days).
Average snowfall in December
Columbia, NJ
- Average snowfall in December: 3.35"
The month with the highest snowfall is March (3.82").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Columbia, NJ
- Average snowfall days in December: 5.7 days
The month with the highest number of snowfall days is February (8.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Columbia, NJ
- Average daylight in December: 9h and 18min
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 30min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 4h and 12min).
Average sunshine days in December
Columbia, NJ
- Average sunshine days in December: 17.7 days
The month with the most sunshine days is November (19.2 days).
The month with the least sunshine days is July (13.3 days).
Average UV index in December
Columbia, 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
Columbia, NJ
- Average cloud cover in December: 52
The month with the most cloud cover is February (Cloud cover 53).
The month with the least cloud cover is July (Cloud cover 37).
Average visibility in December
Columbia, 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).
