December weather forecast
Atlanta, GA

Beautiful sky and cityscape of Atlanta in Georgia, USA
Beautiful sky and cityscape of Atlanta in Georgia, USA

Weather in December

The first month of the winter, December, is still a cool month in Atlanta, Georgia, with temperature in the range of an average high of 53.8°F (12.1°C) and an average low of 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, the average low-temperature is 39.7°F (4.3°C).

Humidity

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

Rainfall

In Atlanta, Georgia, during December, the rain falls for 9.5 days and regularly aggregates up to 1.3" (33mm) of precipitation. In Atlanta, during the entire year, the rain falls for 134.6 days and collects up to 14.72" (374mm) of precipitation.

Snowfall

Months with snowfall in Atlanta are January through March and December. December is the first month it typically snows. Throughout December, in the average 0.3 snowfall days, it receives 0.12" (3mm) of snow. In Atlanta, during the entire year, snow falls for 2.3 days and aggregates up to 0.59" (15mm) of snow.

Daylight

The month with the shortest days is December, with an average of 9h and 58min of daylight.
On the first day of December in Atlanta, sunrise is at 7:24 am and sunset at 5:28 pm. On the last day of the month, sunrise is at 7:42 am and sunset at 5:39 pm EST.

Sunshine

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

UV index

The months with the lowest UV index are January and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for ordinary individuals.
Note: In December, the average maximum UV index of 2 translate into the following recommendations:
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. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the most humid month in Atlanta?

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

What is the average humidity in December in Atlanta?

The average relative humidity in December is 77%.

How much does it rain in Atlanta in December?

In Atlanta, in December, it is raining for 9.5 days, with typically 1.3" (33mm) of accumulated precipitation.

When does it start to snow in Atlanta?

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.

What is the month with the shortest days in Atlanta?

The month with the shortest days is December, with an average of 9h and 58min of daylight.

How many hours of daylight does Atlanta have in December?

In December, the average day length is 9h and 58min.

When are sunrise and sunset in December in Atlanta?

On the first day of December in Atlanta, Georgia, sunrise is at 7:24 am and sunset at 5:28 pm. On the last day of the month, sunrise is at 7:42 am and sunset at 5:39 pm EST.

What is the month with the least sunshine in Atlanta?

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

How long on average sun shines in December in Atlanta?

The average sunshine duration in December in Atlanta is 5.1h.

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

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

How high is the UV index in December in Atlanta?

In December, the average daily maximum UV index in Atlanta, Georgia, is 2. A UV Index value of 2, and less, symbolizes a low health risk from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Atlanta, GA

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).

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Average pressure in December
Atlanta, GA

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

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

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Average wind speed in December
Atlanta, GA

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).

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Average humidity in December
Atlanta, GA

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

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

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Average rainfall in December
Atlanta, GA

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").

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Average rainfall days in December
Atlanta, GA

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).

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Average snowfall in December
Atlanta, GA

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

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

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Average snowfall days in December
Atlanta, GA

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).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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

Average daylight in December / Average sunshine in December - Atlanta, GA
  • Average daylight in December: 9h and 58min

The month with the longest days is June (Average daylight: 14h and 22min).
The month with the shortest days is December (Average daylight: 9h and 58min).

  • Average sunshine in December: 5h and 6min

The months with the most sunshine are June and July (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).

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Average sunshine days in December
Atlanta, GA

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).

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Average UV index in December
Atlanta, GA

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).
The months with the lowest UV index are January and December (UV index 2).

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Average cloud cover in December
Atlanta, GA

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).

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Average visibility in December
Atlanta, GA

Average visibility in December - Atlanta, 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).

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