December weather forecastCobb, GA

December

Weather in December

December, the first month of the winter in Cobb, is also a moderate month, with an average temperature varying between 59.9°F (15.5°C) and 44.6°F (7°C).

Temperature

Cobb records a mild change in average high-temperature during December, easing from 66°F (18.9°C) in November to a still refreshing 59.9°F (15.5°C). Throughout December, an average low-temperature of 44.6°F (7°C) is experienced.

Humidity

August and December, with an average relative humidity of 76%, are the most humid months in Cobb, Georgia.

Rainfall

December is the month with the most rainfall. Rain falls for 11.7 days and accumulates 3.82" (97mm) of precipitation.

Snowfall

February through December are months without snowfall.

Daylight

With an average of 10h and 6min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 7:19 am and sunset at 5:31 pm. On the last day of December, in Cobb, sunrise is at 7:36 am and sunset at 5:42 pm EST.

Sunshine

The month with the least sunshine is December, with an average of 5.4h of sunshine.

UV index

The months with the lowest UV index in Cobb are January and December, with an average maximum UV index of 3. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: The average daily UV index of 3 in December transforms into the following instructions:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.

Updated: Feb 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

In Cobb, 59.9°F (15.5°C) is the average high-temperature and 44.6°F (7°C) is the average low-temperature during December. In September, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, is appraised at 95°F (35°C).

The months with the highest humidity in Cobb, Georgia, are August and December, with an average relative humidity of 76%.

In Cobb, Georgia, the average relative humidity in December is 76%.

December is the month with the most rainfall in Cobb. Rain falls for 11.7 days and accumulates 3.82" (97mm) of precipitation.

In Cobb, Georgia, in December, during 11.7 rainfall days, 3.82" (97mm) of precipitation is typically accumulated.

In Cobb, snow does not fall in February through December.

In Cobb, Georgia, in December, it doesn't snow. In January, it regularly snows.

The month with the shortest days is December, with an average of 10h and 6min of daylight.

The average day length in December in Cobb, Georgia, is 10h and 6min.

In December, on the first day of the month, sunrise is at 7:19 am and sunset at 5:31 pm. On the last day of the month, in Cobb, sunrise is at 7:36 am and sunset at 5:42 pm EST.

December has the least sunshine of the year, with an average of 5.4h of sunshine.

In December, the average sunshine duration is 5.4h.

January and December, with an average maximum UV index of 3, are months with the lowest UV index in Cobb.

The average daily maximum UV index in December in Cobb is 3. A UV Index of 3 to 5 symbolizes a moderate vulnerability from exposure to the Sun's UV radiation.

Today

Tomorrow

Long-term

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

Nov

December

Jan

Average high temperature

66°F

59.9°F

56.8°F

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

8.5mph

9mph

9.3mph

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

20.5

18.2

18.8

Average UV index

Average cloud cover

Average visibility

Average temperature in December
Cobb, GA

Average high temperature in December: 59.9°F

The warmest month (with the highest average high temperature) is July (90.1°F).
The month with the lowest average high temperature is January (56.8°F).

Average low temperature in December: 44.6°F

The months with the highest average low temperature are July and August (72.9°F).
The coldest month (with the lowest average low temperature) is January (40.1°F).

Average pressure in December
Cobb, GA

Average pressure in December: 30.14"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The months with the lowest atmospheric pressure are June and August (29.98"Hg).

Average wind speed in December
Cobb, GA

Average wind speed in December: 8.3mph

The windiest months (with the highest average wind speed) are February and March (8.7mph).
The calmest month (with the lowest average wind speed) is August (5.8mph).

Average humidity in December
Cobb, GA

Average humidity in December: 76%

The months with the highest relative humidity are August and December (76%).
The months with the lowest relative humidity are October and November (70%).

Average rainfall in December
Cobb, GA

Average rainfall in December: 3.82"

The wettest month (with the highest rainfall) is December (3.82").
The driest month (with the least rainfall) is November (1.97").

Average rainfall days in December
Cobb, GA

Average rainfall days in December: 11.7 days

The month with the highest number of rainy days is August (22.1 days).
The month with the least rainy days is November (8.1 days).

Average snowfall in December
Cobb, GA

Average snowfall in December: 0"

The month with the highest snowfall is January (0.04").
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0").

Average snowfall days in December
Cobb, GA

Average snowfall days in December: 0 days

The month with the highest number of snowfall days is January (0.2 days).
The months with the least snowfall days are April, May, June, July, August, September, October, November and December (0 days).

Average daylight in December /
Average sunshine in December
Cobb, GA

Average daylight in December: 10h and 6min

The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).

Average sunshine in December: 5h and 24min

The month with the most sunshine is June (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).

Average sunshine days in December
Cobb, GA

Average sunshine days in December: 18.2 days

The month with the most sunshine days is November (20.5 days).
The months with the least sunshine days are July and August (6.3 days).

Average UV index in December
Cobb, GA

Average UV index in December: 3

The months with the highest UV index are May, June and July (UV index 7).
The months with the lowest UV index are January and December (UV index 3).

Average cloud cover in December
Cobb, GA

Average cloud cover in December: 41

The month with the most cloud cover is December (Cloud cover 41).
The months with the least cloud cover are May, June and October (Cloud cover 28).

Average visibility in December
Cobb, GA

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).