December weather forecastCockeysville, MD

December

Weather in December

Entering the final month of the year, December sees Cockeysville wrapped in winter's embrace. The temperature remains cool, touching lows of 33.1°F (0.6°C). The city comes full circle weather-wise, with December's 0.24" (6mm) of snowfall matching that of January. The month experiences one of the shortest daylight durations of the year, with just 9.4 daylight hours. As winter settles, the wind, too, gains momentum, howling through the city at an average speed of 8.3mph (13.4km/h). Despite the chilly weather, the spirit of holiday celebrations warms the hearts of Cockeysville's residents.

Temperature

Cockeysville in December experiences a subtle temperature decline, with average high-temperatures reducing from a fresh 52.9°F (11.6°C) in November to a chilly 43.9°F (6.6°C). Cockeysville's nighttime temperature during December is consistently averaged at an icy 33.1°F (0.6°C).

Humidity

In Cockeysville, the average relative humidity in December is 77%.

Rainfall

In December, the rain falls for 7.1 days. Throughout December, 0.75" (19mm) of precipitation is accumulated. In Cockeysville, during the entire year, the rain falls for 101.9 days and collects up to 9.17" (233mm) of precipitation.

Snowfall

Months with snowfall are January through April, November and December. In December, it is snowing for 2 days. Throughout December, 0.24" (6mm) of snow is accumulated. Throughout the year, there are 12.1 snowfall days, and 1.81" (46mm) of snow is accumulated.

Daylight

With an average of 9h and 24min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 7:08 am and sunset at 4:43 pm. On the last day of December, sunrise is at 7:26 am and sunset at 4:53 pm EST.

Sunshine

In Cockeysville, the average sunshine in December is 5.1h.

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 value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: The maximum UV index, 2 during December, leads to the following recommendations:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.

Updated: Jun 4, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

An average high-temperature, in December, in Cockeysville, is 43.9°F (6.6°C) and the average low-temperature is 33.1°F (0.6°C). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which represents the influence of relative humidity on air temperature, in August is evaluated at 89.6°F (32°C).

The average relative humidity in December is 77%.

In Cockeysville, in December, during 7.1 rainfall days, 0.75" (19mm) of precipitation is typically accumulated.

In Cockeysville, during December, snow falls for 2 days and regularly aggregates up to 0.24" (6mm) of snow.

December has the shortest days of the year, with an average of 9h and 24min of daylight.

The average day length in December is 9h and 26min.

In December, on the first day of the month, sunrise is at 7:08 am and sunset at 4:43 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 4:53 pm EST.

In December, the average sunshine duration in Cockeysville is 5.1h.

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

In December, the average daily maximum UV index is 2. A UV Index estimate of 2, and below, represents a low health threat 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

52.9°F

43.9°F

37.9°F

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

8.6mph

8.9mph

9.7mph

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

22.9

21.8

22.6

Average UV index

Average cloud cover

Average visibility

Average temperature in December
Cockeysville, MD

Average high temperature in December: 43.9°F

The warmest month (with the highest average high temperature) is July (84.9°F).
The month with the lowest average high temperature is January (37.9°F).

Average low temperature in December: 33.1°F

The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (25.9°F).

Average pressure in December
Cockeysville, 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).

Average wind speed in December
Cockeysville, MD

Average wind speed in December: 8.3mph

The windiest month (with the highest average wind speed) is March (9.1mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).

Average humidity in December
Cockeysville, MD

Average humidity in December: 77%

The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is April (73%).

Average rainfall in December
Cockeysville, MD

Average rainfall in December: 0.75"

The wettest month (with the highest rainfall) is August (1.46").
The driest month (with the least rainfall) is September (0.43").

Average rainfall days in December
Cockeysville, MD

Average rainfall days in December: 7.1 days

The month with the highest number of rainy days is July (12.6 days).
The month with the least rainy days is January (5.2 days).

Average snowfall in December
Cockeysville, MD

Average snowfall in December: 0.24"

The month with the highest snowfall is January (0.55").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in December
Cockeysville, MD

Average snowfall days in December: 2 days

The month with the highest number of snowfall days is February (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
Cockeysville, MD

Average daylight in December: 9h and 24min

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 6min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).

Average sunshine days in December
Cockeysville, MD

Average sunshine days in December: 21.8 days

The month with the most sunshine days is November (22.9 days).
The month with the least sunshine days is July (15.2 days).

Average UV index in December
Cockeysville, 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).

Average cloud cover in December
Cockeysville, MD

Average cloud cover in December: 45

The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 30).

Average visibility in December
Cockeysville, 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).