December weather forecast
Dunwoody, GA

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Weather in December

December is a month of holiday cheer and wintry weather across Dunwoody, Georgia. Despite the festivities and bright decorations throughout the city, the weather tends to lean towards chillier temperatures. December is the month with the highest relative humidity of the year at 77%. Locals enjoy cozy gatherings indoors, with the warmth of the holiday spirit contrasting the cold outside. As the city lights up and snow occasionally dots the landscape, Dunwoody embraces the tranquility of winter.

Temperature

December's onset in Dunwoody brings a negligible change in high-temperatures, falling from a comfortable 61°F (16.1°C) in November to a fresh 53.4°F (11.9°C). Throughout December, the nighttime temperature in Dunwoody, Georgia, averages to an icy 39.2°F (4°C).

Humidity

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

Rainfall

In Dunwoody, during December, the rain falls for 14.4 days and regularly aggregates up to 3.86" (98mm) of precipitation. In Dunwoody, during the entire year, the rain falls for 180.4 days and collects up to 42.91" (1090mm) of precipitation.

Snowfall

January through March, November and December are months with snowfall. In December, in Dunwoody, it is snowing for 0.6 days. Throughout December, 0.71" (18mm) of snow is accumulated. Throughout the year, there are 3.9 snowfall days, and 3.07" (78mm) of snow is accumulated.

Daylight

December has the shortest days of the year in Dunwoody, with an average of 9h and 54min of daylight.
On the first day of the month, sunrise is at 7:25 am and sunset at 5:28 pm. On the last day of December, sunrise is at 7:42 am and sunset at 5:38 pm EST.

Sunshine

December has the least sunshine of the year in Dunwoody, with an average of 5h of sunshine.

UV index

With an average maximum UV index of 2, December is the month with the lowest UV index. A UV Index reading of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for average individuals.
Note: In December, the maximum UV index of 2 suggests this advice:
Most people face no serious problems with extended sun exposure, but those with fair skin, infants, and children always need protection. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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Frequently asked questions

What is the average December temperature in Dunwoody?

The high-temperature, in December, in Dunwoody, records 53.4°F (11.9°C), while the low-temperature is 39.2°F (4°C). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which combines relative humidity and air temperature, in September is appraised at 89.6°F (32°C).

What is the most humid month in Dunwoody?

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

What is the average humidity in December in Dunwoody?

The average relative humidity in December in Dunwoody is 77%.

How much does it rain in Dunwoody in December?

In Dunwoody, during December, the rain falls for 14.4 days and regularly aggregates up to 3.86" (98mm) of precipitation.

How much does it snow in Dunwoody in December?

In Dunwoody, Georgia, in December, during 0.6 snowfall days, 0.71" (18mm) of snow is typically accumulated.

What is the month with the shortest days in Dunwoody?

December has the shortest days of the year, with an average of 9h and 54min of daylight.

How many hours of daylight does Dunwoody have in December?

The average day length in December in Dunwoody, Georgia, is 9h and 56min.

When is the sunrise / sunset in December in Dunwoody?

On the first day of December, sunrise is at 7:25 am and sunset at 5:28 pm. On the last day of the month, sunrise is at 7:42 am and sunset at 5:38 pm EST.

What is the month with the least sunshine in Dunwoody?

With an average of 5h of sunshine, December has the least sunshine of the year in Dunwoody, Georgia.

How long on average sun shines in December in Dunwoody?

In December, the average sunshine duration in Dunwoody, Georgia, is 5h.

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

December is the month with the lowest UV index in Dunwoody, with an average maximum UV index of 2.

What is the UV index intensity in December in Dunwoody?

The average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents a minimal hazard to health from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Dunwoody, GA

Average temperature in December - Dunwoody, GA
  • Average high temperature in December: 53.4°F

The warmest month (with the highest average high temperature) is July (90.5°F).
The month with the lowest average high temperature is January (49.6°F).

  • Average low temperature in December: 39.2°F

The month with the highest average low temperature is July (71.4°F).
The coldest month (with the lowest average low temperature) is January (34.3°F).

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Average pressure in December
Dunwoody, GA

Average pressure in December - Dunwoody, 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
Dunwoody, GA

Average wind speed in December - Dunwoody, 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 (4.6mph).

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Average humidity in December
Dunwoody, GA

Average humidity in December - Dunwoody, 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 (68%).

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Average rainfall in December
Dunwoody, GA

Average rainfall in December - Dunwoody, GA
  • Average rainfall in December: 3.86"

The wettest month (with the highest rainfall) is August (5.16").
The driest month (with the least rainfall) is October (2.17").

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Average rainfall days in December
Dunwoody, GA

Average rainfall days in December - Dunwoody, GA
  • Average rainfall days in December: 14.4 days

The month with the highest number of rainy days is July (21.1 days).
The month with the least rainy days is October (9.5 days).

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Average snowfall in December
Dunwoody, GA

Average snowfall in December - Dunwoody, GA
  • Average snowfall in December: 0.71"

The month with the highest snowfall is January (1.14").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in December
Dunwoody, GA

Average snowfall days in December - Dunwoody, GA
  • Average snowfall days in December: 0.6 days

The month with the highest number of snowfall days is January (1.4 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
Dunwoody, GA

Average daylight in December / Average sunshine in December - Dunwoody, GA
  • Average daylight in December: 9h and 5min

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).

  • Average sunshine in December: 5h and 0min

The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).

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Average sunshine days in December
Dunwoody, GA

Average sunshine days in December - Dunwoody, GA
  • Average sunshine days in December: 15.4 days

The month with the most sunshine days is October (20.2 days).
The month with the least sunshine days is July (7.7 days).

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Average UV index in December
Dunwoody, GA

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

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

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Average cloud cover in December
Dunwoody, GA

Average cloud cover in December - Dunwoody, GA
  • Average cloud cover in December: 47

The month with the most cloud cover is December (Cloud cover 47).
The month with the least cloud cover is June (Cloud cover 30).

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Average visibility in December
Dunwoody, GA

Average visibility in December - Dunwoody, 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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Dunwoody, Georgia, USA

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