December Weather in Atlanta, United States

Last updated: February 24, 2025

In Atlanta, December offers a blend of cool temperatures and a touch of winter charm. With maximum daily highs reaching 24°C (75°F) and average temperatures around 9°C (48°F), residents and visitors can enjoy relatively mild weather. However, the month also brings its share of chill, with lows dipping to -6°C (22°F). Rainfall is notable, totaling 138 mm (5.4 in) over about 11 days, contributing to the city's lush landscape. The air is often humid, averaging a high of 89%, which can make the cooler days feel brisk. Overall, December in Atlanta creates a unique atmosphere perfect for holiday festivities and cozy gatherings.

December Temperature in Atlanta

In December, Atlanta experiences a delightful transition as temperatures begin to dip, embracing the chill of winter. The month showcases a minimum of -6°C (22°F), while the average hovers around 9°C (48°F), just above the freezing mark, creating a refreshing climate for outdoor holiday festivities. With a maximum temperature reaching 24°C (75°F), residents and visitors can still enjoy mildly warm afternoons under lighter winter sun. This gradual decrease from the milder fall temperatures reflects a typical shift as the city transitions into winter, while still allowing for some pleasantly warm days that encourage outdoor exploring and seasonal celebrations.

December Weather in Atlanta: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Atlanta, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec455156627176797875665248
Data source: Temperature data for Atlanta generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Atlanta

In December, Atlanta experiences a notable shift in precipitation patterns, with 138 mm (5.4 in) of rainfall spread over approximately 11 days. This month's rainfall is significant compared to the lower totals seen in November, where only 82 mm (3.2 in) fell over just 8 days. December's precipitation aligns more closely with the wetter months of February and August, illustrating a trend of increased moisture as the year comes to a close. The combination of moderate rainfall and a relatively higher number of rainy days suggests that while December may not be the rainiest month on record, it certainly signals a transition toward the wetter winter months ahead, inviting both the beauty of lush greenery and the cozy charm of indoor activities.

December Precipitation Trends in Atlanta

The chart displays monthly precipitation patterns in Atlanta, with values for each month alongside December's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec1061451311249612111214311212482138
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

December Humidity in Atlanta

In December, humidity in Atlanta peaks at 89%, marking a notable increase from the previous months. This rise in moisture is particularly striking when juxtaposed against the year’s lower points, such as October's 78%. Throughout the year, humidity in Atlanta shows a generally consistent trend, with levels hovering in the low to mid-80s from January through August. November sees a spike back up to 86%, setting the stage for December's notable humidity levels. This trend highlights a year-end pattern where cooler temperatures pair with increased moisture, making December one of Atlanta's most humid months.

December Average Humidity in Atlanta

This chart illustrates the average monthly humidity levels in Atlanta, with December's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how December's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec86%84%83%81%81%81%83%81%82%78%86%89%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Atlanta

As December rolls into Atlanta, residents can expect a notable dip in the UV Index, with levels registered at 4—a moderate exposure category. This decline marks a significant contrast to the peak extreme levels observed during the summer months, which reached 11 in June and July, where a mere 10 minutes of sun could lead to burns. In December, the burn time extends back to 30 minutes, allowing for safer outdoor activities under the sun. This seasonal shift highlights the importance of adjusting sun protection strategies throughout the year. For those curious to explore the UV trends in more detail, visit Atlanta UV Index.

Maximum UV Index Levels in Atlanta for December

The chart shows the monthly maximum UV Index (UVI) for Atlanta in December, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec47811111111109864
Data source: Atlanta December UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

December Sunshine in Atlanta

As the year winds down, December in Atlanta offers a blend of stunning sunshine and cooler temperatures. With 193 hours of sunlight, December shines as a glimmering conclusion to the year, though it trails behind the vibrant highs of mid-spring and summer. The data reveals a clear trend: as the seasons shift, so does the availability of sunshine, peaking in the summer months, particularly in July with 339 hours. Interestingly, while December may not compete with those sun-soaked months, it still holds its place as a respectable showcase of daylight, setting a warm tone for the festive season. As we reflect on a year filled with varied climates, December serves as a gentle reminder of the cyclical nature of sunshine in Atlanta, inviting us to embrace the beauty of all seasons.

Monthly Sunshine Duration in Atlanta: December Highlighted

The December sunshine duration represents the total number of hours Atlanta experiences direct sunlight during the month of December, excluding cloudy or obstructed periods. This chart compares the sunshine duration of December with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec169h173h242h282h314h309h339h318h297h270h241h193h
Data source: Atlanta December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Atlanta During December

In Atlanta, the likelihood of sunny weather in December stands at 38%, which reflects a notable drop following the high of 65% in November. This transition marks the onset of a cooler season, where the sun tends to hide behind clouds more often than not. Interestingly, as the year progresses from April's peak of 53%, we see a gradual decline in sunny days, particularly in the heart of summer, which dips to its lowest in July at just 32%. By December, the trend continues, suggesting that while the month may not be the sunniest, it still holds a reasonable chance for those seeking some holiday cheer in the sunshine.

Percentage of Sunny Days in December in Atlanta

The chart illustrates the percentage of sunny days in Atlanta throughout the year, with December highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Atlanta experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec40%39%34%53%37%35%32%38%44%43%65%38%
Data source: Atlanta December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Atlanta in December

As December settles in Atlanta, the city experiences a noticeable dip in daylight duration, with only 9 hours of sunlight per day. This marks the shortest daylight of the year, following a steady decline from 10 hours in both January and February. Throughout the spring and summer months, daylight flourishes, peaking at a vibrant 14 hours in June and July. However, as we transition into fall, the days gradually shorten, dropping to 12 hours in September and closing out the year with the dimming days of December. This seasonal rhythm highlights the contrast between the sun-soaked summer months and the cozy, shorter days of winter, inviting Atlantans to embrace the unique beauty of each season.

Average Daylight Hours in Atlanta for December

The chart illustrates the variation in daylight duration in Atlanta throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec10h 10m10h 58m11h 59m13h 2m13h 55m14h 21m14h 7m13h 20m12h 20m11h 17m10h 23m9h 55m
Data source: Atlanta daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Atlanta

As December settles in Atlanta, the winds begin to whisper promises of winter, with an average speed of 3.2 m/s (approximately 7 mph). This slight uptick from the summer's languid breezes, which fell to a gentle 2.0 m/s in July, marks a transition that hints at the approach of colder months. Notably, December’s winds are brisker than the sultry summer, aligning closely with the fall's invigorating gusts, particularly November's 3.1 m/s. Overall, Atlanta's wind patterns illustrate a gradual return to livelier currents as the year wraps up, inviting residents to enjoy the crisp air and the festive spirit it brings.

Average December Wind Speed in Atlanta

The chart displays monthly wind speed patterns in Atlanta, with values for each month shown alongside December's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how December's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec3.53.63.53.13.12.62.02.12.32.73.13.2 m/s
Data source: Atlanta December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Atlanta Compares to Other Months

The weather in Atlanta changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of December's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Atlanta and find detailed weather information for every month.

December and January showcase a gradual transition in weather conditions. December experiences slightly milder temperatures, ranging from a minimum of -6°C (22°F) to a maximum of 24°C (75°F), while January sees even colder lows of -11°C (12°F) but reaches a comparable high of 25°C (77°F). Precipitation is slightly higher in December at 138 mm (5.4 in) over 11 days, compared to January's 106 mm (4.2 in) across 9 days. Humidity remains relatively constant, hovering around 89% in December and decreasing slightly to 86% in January. For a more detailed look at the weather during this month, visit Atlanta weather in January.

December and February exhibit notable similarities and differences in their weather patterns. In December, average temperatures range from a chilly minimum of -6°C (22°F) to a comfortable maximum of 24°C (75°F), with an average of 9°C (48°F). The month experiences around 138 mm (5.4 in) of precipitation over 11 days and is characterized by high humidity at 89%. In contrast, February records slightly warmer temperatures, with average minimums of -5°C (22°F) and maximums reaching 26°C (80°F), averaging 11°C (51°F). Precipitation increases to 145 mm (5.7 in) spread over 13 days, though humidity decreases slightly to 84%. For those interested in the specifics of February’s climate, you can explore more about Atlanta weather in February.

December weather features a range of temperatures from a chilling -6°C (22°F) to a mild 24°C (75°F), averaging around 9°C (48°F). With 138 mm (5.4 in) of precipitation over 11 days, December tends to be quite wet and humid, boasting an average humidity of 89%. In contrast, March experiences slightly warmer conditions, with temperatures ranging from -5°C (23°F) to a maximum of 29°C (85°F), and an average of 13°C (56°F). March also sees a similar level of precipitation at 130 mm (5.1 in) across 13 days, but with a lower humidity of 83%. For more specific insights about weather patterns in March, you can check out Atlanta weather in March.

When comparing the weather in December and April, we see notable differences in temperature and humidity. December features a wider temperature range, with minimums reaching as low as -6°C (22°F) and maximums hitting 24°C (75°F), averaging 9°C (48°F). The month is characterized by high humidity at 89% and receives around 138 mm (5.4 in) of precipitation over 11 days. In contrast, April brings milder temperatures, with minimums at 0°C (31°F) and maximums peaking at 29°C (85°F), averaging a comfortable 17°C (62°F). April also enjoys slightly lower humidity at 81% and less precipitation, totaling 124 mm (4.9 in) over 9 days. For more specifics on daily conditions, check out Atlanta weather in April.

December and May present striking contrasts in weather. In December, temperatures can drop as low as -6°C (22°F), with average highs reaching only 9°C (48°F), while May enjoys milder conditions with minimums of 4°C (40°F) and average highs soaring to 22°C (71°F). Additionally, December experiences more precipitation, totaling 138 mm (5.4 in) over about 11 days, compared to May's 96 mm (3.8 in) over 10 days. Humidity levels are also higher in December at 89%, while May sees a lower humidity of 81%. For more specific details on temperatures and conditions during May, you can check Atlanta weather in May.

December and June present contrasting weather patterns. December temperatures range from a chilly minimum of -6°C (22°F) to a comfortable average of 9°C (48°F), with occasional highs reaching up to 24°C (75°F). The month experiences significant precipitation, totaling 138 mm (5.4 in) over about 11 days, along with high humidity averaging 89%. In contrast, June brings a warmer climate, with temperatures starting at a minimum of 12°C (54°F) and averaging 25°C (76°F), peaking at a hot 33°C (92°F). Despite slightly less rainfall at 121 mm (4.8 in) over 16 days, the humidity is lower at 81%. For more detailed insights on June weather in Atlanta, you can check Atlanta weather in June.

The weather in December contrasts starkly with that of July. In December, temperatures range from a chilly minimum of -6°C (22°F) to a pleasant average of 9°C (48°F), with highs reaching up to 24°C (75°F). This month experiences significant precipitation, measuring 138 mm (5.4 in) over about 11 days, accompanied by high humidity at 89%.

In contrast, July boasts much warmer conditions, with a minimum temperature of 16°C (61°F) and an average of 26°C (80°F), peaking at a sweltering 35°C (95°F). During this month, precipitation decreases to 112 mm (4.4 in), occurring over 18 days, while humidity slightly lowers to 83%. For more details about July weather, you can visit Atlanta weather in July.

December and August present starkly different weather conditions. In December, temperatures range from a chilly minimum of -6°C (22°F) to a more moderate maximum of 24°C (75°F), with an average temperature of about 9°C (48°F). This month also experiences high humidity at 89% and sees approximately 138 mm (5.4 in) of precipitation over around 11 days. In contrast, August features much warmer conditions, with temperatures ranging from a minimum of 16°C (61°F) to a sweltering maximum of 35°C (96°F) and an average of 26°C (79°F). Precipitation is slightly higher at 142 mm (5.6 in) over 15 days, but humidity remains lower at 81%. For more details, you can check out Atlanta weather in August.

When comparing the weather in December and September, notable differences emerge. December boasts a minimum temperature of -6°C (22°F) and an average of 9°C (48°F), with maximums reaching 24°C (75°F), while September presents a much warmer profile, with minimums at 10°C (50°F) and averages around 24°C (75°F), peaking at a high of 36°C (97°F). In terms of precipitation, December has 138 mm (5.4 in) over 11 days, compared to September's 112 mm (4.4 in) across just 8 days. Humidity levels are also slightly higher in December at 89%, compared to September's 82%, contributing to a more damp and chilly atmosphere as the year ends. For more detailed insights into September weather, visit Atlanta weather in September.

In comparing the weather between December and October, one can observe notable differences in temperature and precipitation. December experiences a wider temperature range with minimums dropping to -6°C (22°F) and maximums reaching up to 24°C (75°F), while October has a milder minimum of 0°C (32°F) and can peak at a scorching 37°C (98°F). Additionally, December is marked by higher humidity levels at 89%, compared to October's 78%. Both months see significant rainfall, with December receiving 138 mm (5.4 in) over 11 days and October seeing slightly less at 123 mm (4.9 in) over 8 days. For a more detailed overview, you can check out Atlanta weather in October.

In comparing the weather of December and November, December tends to be slightly cooler on average, with temperatures ranging from a minimum of -6°C (22°F) to a maximum of 24°C (75°F), while November has a slightly warmer average ranging from -6°C (22°F) to 26°C (79°F). Additionally, December experiences more precipitation, with 138 mm (5.4 in) over 11 days compared to November's 82 mm (3.2 in) across 8 days. Humidity levels are also slightly higher in December at 89%, in contrast to November's 86%. For more detailed information about November weather, visit Atlanta weather in November.

Compare Atlanta's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Atlanta

As December rolls into Atlanta, the weather takes a noticeable turn, showcasing a unique blend of cool temperatures and increased humidity that sets it apart from the milder fall months. With average temperatures dipping to a brisk 9°C, this month brings a more pronounced chill, particularly during nighttime when it can plummet to a frosty -6°C. Rainfall becomes more frequent, with precipitation occurring on about 11 days throughout the month, accumulating to 138 mm, making this one of the wetter times of the year. This combination of cooler weather and increased precipitation creates a distinctive atmosphere, perfect for enjoying the holiday season. If you're curious about the yearly weather patterns, check out Atlanta Climate for more detailed insights!