December weather forecast and climate
Atlanta, GA

Beautiful sky and cityscape of Atlanta in Georgia, USA
Beautiful sky and cityscape of Atlanta in Georgia, USA
December, the first month of the winter, in Atlanta, is still a cool month, with average temperature varying between 53.8°F (12.1°C) and 39.7°F (4.3°C).

Temperature

In Atlanta, the average high-temperature in December marginally drops, from an enjoyable 61.3°F (16.3°C) in November, to a fresh 53.8°F (12.1°C). In December, in Atlanta, Georgia, the average low-temperature is 39.7°F (4.3°C).

Humidity

The most humid month in Atlanta is December, with an average relative humidity of 77%.

Rainfall

In December, the rain falls for 9.5 days. Throughout December, 1.3" (33mm) of precipitation is accumulated. Throughout the year, in Atlanta, there are 134.6 rainfall days, and 14.72" (374mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through March and December. December is the first month it typically snows in Atlanta. Throughout December, in the average 0.3 snowfall days, it receives 0.12" (3mm) of snow. Throughout the year, there are 2.3 snowfall days, and 0.59" (15mm) of snow is accumulated.

Daylight

The month with the shortest days in Atlanta is December, with an average of 9.9h of daylight.

Sunshine

December has the least sunshine of the year, with an average of 5.1h of sunshine.

UV index

January 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 vulnerability from the exposure to the Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 2 interpret into the following advice:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

What is the temperature in December in Atlanta?

In Atlanta, Georgia, in December, the average high-temperature is 53.8°F (12.1°C), and the average low-temperature is 39.7°F (4.3°C).

What is the most humid month in Atlanta?

The most humid month is December, with an average relative humidity of 77%.

What is the average humidity in December in Atlanta?

In December, the average relative humidity is 77%.

How many days does it rain in December in Atlanta?

In Atlanta, during December, the rain falls for 9.5 days and regularly aggregates up to 1.3" (33mm) of precipitation.

When does it start to snow in Atlanta?

December is the first month it typically snows in Atlanta, Georgia. Throughout December, in the average 0.3 snowfall days, it receives 0.12" (3mm) of snow.

What is the month with the shortest days in Atlanta?

December has the shortest days of the year, with an average of 9.9h of daylight.

How many hours of daylight does Atlanta have in December?

The average length of the day in December is 9.9h.

What is the month with the least sunshine in Atlanta?

December has the least sunshine of the year in Atlanta, with an average of 5.1h of sunshine.

How many hours of sunshine does Atlanta have in December?

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

What are the months with the lowest UV index in Atlanta?

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

What is the UV index intensity in December in Atlanta?

In December, the average daily maximum UV index in Atlanta is 2. A UV Index reading of 2, and below, represents a low health threat from unsafe exposure to the Sun's UV rays.
Average temperature in December - Atlanta, GA
  • Average high temperature in December: 53.8°F

The warmest month (with the highest average high temperature) is July (90.7°F).
The month with the lowest average high temperature is January (50.5°F).

  • Average low temperature in December: 39.7°F

The month with the highest average low temperature is July (71.6°F).
The coldest month (with the lowest average low temperature) is January (34.9°F).

Average pressure in December - Atlanta, GA
  • Average pressure in December: 30.15"

The month with the highest atmospheric pressure is January (30.16").
The month with the lowest atmospheric pressure is June (29.99").

Average wind speed in December - Atlanta, GA
  • Average wind speed in December: 7.5mph

The windiest month (with the highest average wind speed) is January (8mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).

Average humidity in December - Atlanta, GA
  • Average humidity in December: 77%

The month with the highest relative humidity is December (77%).
Months with the lowest relative humidity are July and August (69%).

Average rainfall in December - Atlanta, GA
  • Average rainfall in December: 1.3"

The wettest month (with the highest rainfall) is August (2.32").
The driest month (with the least rainfall) is September (0.55").

Average rainfall days in December - Atlanta, GA
  • Average rainfall days in December: 9.5 days

The month with the highest number of rainy days is August (17.1 days).
The month with the least rainy days is November (6.9 days).

Average snowfall in December - Atlanta, GA
  • Average snowfall in December: 0.12"

The month with the highest snowfall is February (0.2").
Months with the least snowfall are April, May, June, July, August, September, October and November (0").

Average snowfall days in December - Atlanta, GA
  • Average snowfall days in December: 0.3 days

The month with the highest number of snowfall days is February (0.9 days).
Months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in December / Average sunshine in December - Atlanta, GA
  • Average daylight in December: 9.9h

The month with the longest days is June (Average daylight: 14.4h).
The month with the shortest days is December (Average daylight: 9.9h).

  • Average sunshine in December: 5.1h

Months with the most sunshine are June and July (Average sunshine: 10.7h).
The month with the least sunshine is December (Average sunshine: 5.1h).

Average sunshine days in December - Atlanta, GA
  • Average sunshine days in December: 19.2 days

The month with the most sunshine days is October (22.6 days).
The month with the least sunshine days is July (10.9 days).

Average UV index in December - Atlanta, GA
  • Average UV index in December: 2

The month with the highest UV index is August (UV index 7).
Months with the lowest UV index are January and December (UV index 2).

Average cloud cover in December - Atlanta, GA
  • Average cloud cover in December: 46

The month with the most cloud cover is December (Cloud cover 46).
The month with the least cloud cover is June (Cloud cover 29).

Average visibility in December - Atlanta, GA
  • Average visibility in December: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).