December weather - Winter 2024

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

A beautiful and scenic setting around the waterfront homes at Wilde Lake in Columbia, Maryland

Weather in December

Rounding off the year, December in Columbia, Maryland, brings Winter in its full glory. The drop in temperature is profound and signals the onset of the holiday season. Snowfall is not uncommon, and the city's landscape morphs into a winter wonderland, decorating Columbia in festive hues. Interestingly, December witnesses as much as 1.14" (29mm) of snowfall, adorning the month with a white blanket. As the New Year approaches, the city, covered under a layer of snow, patiently waits to reset its weather clock.

Temperature

December is characterized by a slight reduction in average high-temperature, easing from a fresh 53.1°F (11.7°C) in November to a chilly 44.2°F (6.8°C). Throughout December, the nighttime temperature averages to an icy 32.9°F (0.5°C).

Humidity

The average relative humidity in December is 76%.

Rainfall

In Columbia, during December, the rain falls for 10.2 days and regularly aggregates up to 2.24" (57mm) of precipitation. Throughout the year, in Columbia, Maryland, there are 159.3 rainfall days, and 30.31" (770mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through March, November and December. In Columbia, during December, snow falls for 2.9 days and regularly aggregates up to 1.14" (29mm) of snow. In Columbia, during the entire year, snow falls for 15.9 days and aggregates up to 8.7" (221mm) of snow.

Daylight

With an average of 9h and 30min of daylight, December has the shortest days of the year in Columbia.
On the first day of December, sunrise is at 7:08 am and sunset at 4:44 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 4:54 pm EST.

Sunshine

The average sunshine in December is 5.2h.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: In December, a regular UV index of 2 translates into these guidelines:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.

[Resources]

Frequently asked questions

How cold does it get in Columbia in December?

In December, in Columbia, the average high-temperature is 44.2°F (6.8°C), and the average low-temperature is 32.9°F (0.5°C). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, in August is appraised at 91.4°F (33°C).

What is the average humidity in December in Columbia?

The average relative humidity in December in Columbia, Maryland, is 76%.

How much does it rain in Columbia in December?

In Columbia, Maryland, during December, the rain falls for 10.2 days and regularly aggregates up to 2.24" (57mm) of precipitation.

How many days does it snow in December in Columbia?

In Columbia, during December, snow falls for 2.9 days and regularly aggregates up to 1.14" (29mm) of snow.

What is the month with the shortest days in Columbia?

December has the shortest days of the year, with an average of 9h and 30min of daylight.

How many hours of daylight does Columbia have in December?

In Columbia, the average day length in December is 9h and 28min.

When are sunrise and sunset in December in Columbia?

On the first day of December, sunrise is at 7:08 am and sunset at 4:44 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 4:54 pm EST.

How long on average sun shines in December in Columbia?

In Columbia, the average sunshine duration in December is 5.2h.

What is the month with the lowest UV index in Columbia?

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2.

How high is the UV index in December in Columbia?

In Columbia, the average daily maximum UV index in December is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M A M J J A S O N December

Nov

December

Jan

Average high temperature

53.1°F 11.7°C

44.2°F 6.8°C

38.1°F 3.4°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

8.3mph 13.4km/h

8.5mph 13.7km/h

9.2mph 14.8km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

19.6

17.9

18.2

Average UV index

Average cloud cover

Average visibility

Average temperature in December
Columbia, MD

Average high temperature in December: 44.2°F

The warmest month (with the highest average high temperature) is July (85.8°F).
The month with the lowest average high temperature is January (38.1°F).

Average low temperature in December: 32.9°F

The month with the highest average low temperature is July (68.9°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).

[Resources]

Average pressure in December
Columbia, MD

Average pressure in December: 30.11"Hg

The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

[Resources]

Average wind speed in December
Columbia, MD

Average wind speed in December: 7.8mph

The windiest month (with the highest average wind speed) is March (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

[Resources]

Average humidity in December
Columbia, MD

Average humidity in December: 76%

The months with the highest relative humidity are May and October (77%).
The months with the lowest relative humidity are April and July (72%).

[Resources]

Average rainfall in December
Columbia, MD

Average rainfall in December: 2.24"

The wettest month (with the highest rainfall) is August (4.06").
The driest month (with the least rainfall) is January (1.85").

[Resources]

Average rainfall days in December
Columbia, MD

Average rainfall days in December: 10.2 days

The month with the highest number of rainy days is May (18 days).
The month with the least rainy days is January (8.4 days).

[Resources]

Average snowfall in December
Columbia, MD

Average snowfall in December: 1.14"

The month with the highest snowfall is March (3.03").
The months with the least snowfall are April, May, June, July, August, September and October (0").

[Resources]

Average snowfall days in December
Columbia, MD

Average snowfall days in December: 2.9 days

The month with the highest number of snowfall days is February (4.6 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

[Resources]

Average daylight in December /
Average sunshine in December
Columbia, MD

Average daylight in December: 9h and 3min

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 30min).

Average sunshine in December: 5h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The months with the least sunshine are January and February (Average sunshine: 5h and 6min).

[Resources]

Average sunshine days in December
Columbia, MD

Average sunshine days in December: 17.9 days

The month with the most sunshine days is November (19.6 days).
The month with the least sunshine days is May (11 days).

[Resources]

Average UV index in December
Columbia, MD

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).

[Resources]

Average cloud cover in December
Columbia, MD

Average cloud cover in December: 45

The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 29).

[Resources]

Average visibility in December
Columbia, MD

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).

[Resources]

December weather forecast
Columbia, MD

Contents