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
Cologne's progression into December involves a gentle drop in the average high-temperature, from a fresh 54.1°F (12.3°C) in November to a chilly 46°F (7.8°C). Cologne's average low-temperature in the month of December is recorded at a cold 36.5°F (2.5°C).Humidity
The average relative humidity in December is 76%.Rainfall
In Cologne, during December, the rain falls for 10.1 days and regularly aggregates up to 2.8" (71mm) of precipitation. Throughout the year, there are 144.2 rainfall days, and 27.48" (698mm) of precipitation is accumulated.Snowfall
January through April, November and December are months with snowfall. In Cologne, during December, snow falls for 2.1 days and regularly aggregates up to 0.94" (24mm) of snow. In Cologne, during the entire year, snow falls for 12.6 days and aggregates up to 5.79" (147mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 24min of daylight.On the first day of December in Cologne, sunrise is at 7:00 am and sunset at 4:35 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 4:44 pm EST.
Sunshine
The average sunshine in December is 5.1h.UV index
January, February and December, with an average maximum UV index of 2, are months with the lowest UV index in Cologne. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for average individuals.Note: A maximum UV index of 2 in December translates into the following recommendations:
Babies, children, and those with sensitive skin should always avoid extended periods in the sun. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Boost your sun resistance with garments that are densely woven yet spacious. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
Frequently asked questions
What are December temperatures in Cologne?
What is the average humidity in December in Cologne?
How many days does it rain in December in Cologne?
How many days does it snow in December in Cologne?
What is the month with the shortest days in Cologne?
What is the average length of the day in December in Cologne?
When are sunrise and sunset in December in Cologne?
How long on average sun shines in December in Cologne?
What is the month with the lowest UV index in Cologne?
How high is the UV index in December in Cologne?
Average temperature in December
Cologne, NJ
- Average high temperature in December: 46°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (39.7°F).
- Average low temperature in December: 36.5°F
The month with the highest average low temperature is July (70.5°F).
The coldest month (with the lowest average low temperature) is January (29.7°F).
Average pressure in December
Cologne, NJ
- Average pressure in December: 30.09"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
Cologne, NJ
- Average wind speed in December: 10.1mph
The windiest months (with the highest average wind speed) are January and February (10.6mph).
The calmest month (with the lowest average wind speed) is August (7.2mph).
Average humidity in December
Cologne, NJ
- Average humidity in December: 76%
The months with the highest relative humidity are May and June (79%).
The month with the lowest relative humidity is April (73%).
Average rainfall in December
Cologne, NJ
- Average rainfall in December: 2.8"
The wettest month (with the highest rainfall) is August (2.91").
The driest month (with the least rainfall) is January (1.61").
Average rainfall days in December
Cologne, NJ
- Average rainfall days in December: 10.1 days
The month with the highest number of rainy days is July (16.1 days).
The months with the least rainy days are January and November (8.3 days).
Average snowfall in December
Cologne, NJ
- Average snowfall in December: 0.94"
The month with the highest snowfall is March (1.97").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Cologne, NJ
- Average snowfall days in December: 2.1 days
The month with the highest number of snowfall days is January (3.8 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
Cologne, 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 42min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).
Average sunshine days in December
Cologne, NJ
- Average sunshine days in December: 19.2 days
The month with the most sunshine days is November (19.8 days).
The month with the least sunshine days is July (12.3 days).
Average UV index in December
Cologne, 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 and December (UV index 2).
Average cloud cover in December
Cologne, 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 27).
Average visibility in December
Cologne, 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).
Cologne, New Jersey, USA
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