December Weather in Lithonia, United States

Last updated: June 24, 2025

In Lithonia, United States, the average temperature in December hovers around 9°C (49°F), with variations that can dip to a chilly -6°C (22°F) or soar to a pleasant 24°C (76°F). Expect precipitation to be around 137 mm (5.4 in) over the course of 10 days, while maintaining a high average humidity of 89%.

December Temperature in Lithonia

In December in Lithonia, the average temperature is 9°C (49°F), with maximums reaching 24°C (76°F) and minimums dropping as low as -6°C (22°F). Travelers should be prepared for a wide range of temperatures during this time.

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

The chart illustrates December temperature patterns in Lithonia, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Lithonia, December typically has an average temperature of 9°C (49°F), with highs reaching up to 24°C (76°F) and lows dropping to around -6°C (22°F).

Data source: Temperature data for Lithonia generated using information from the Copernicus Climate Change Service.

December Precipitation in Lithonia

In Lithonia in December, the precipitation amount is 137 mm (5.4 in) over the course of 10 days.

December Precipitation Trends in Lithonia

The chart displays monthly precipitation patterns in Lithonia, 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. In Lithonia, December typically receives around 137 mm (5.4 inches) of precipitation spread over approximately 10 days.

Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

December Humidity in Lithonia

In Lithonia in December, humidity is 89%. With an average temperature of 9°C (49°F), this humidity feels like a persistent dampness that clings to your clothes and skin, making it challenging to stay comfortable while traveling.

December Average Humidity in Lithonia

This chart illustrates the average monthly humidity levels in Lithonia, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in Lithonia is approximately 89%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Lithonia

In Lithonia in December, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Lithonia for better planning.

Maximum UV Index Levels in Lithonia for December

The chart shows the monthly maximum UV Index (UVI) for Lithonia 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. In December, the maximum UV index in Lithonia typically reaches 4, which falls under the moderate exposure category.

Data source: Lithonia 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.

How December Weather in Lithonia Compares to Other Months

Weather in Lithonia varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Lithonia, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Lithonia, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	8°C (46°F)	105 mm (4.1 inches)	86%	moderate
February Weather	11°C (51°F)	146 mm (5.7 inches)	84%	high
March Weather	13°C (56°F)	124 mm (4.9 inches)	83%	very high
April Weather	17°C (62°F)	121 mm (4.7 inches)	81%	very high
May Weather	22°C (71°F)	106 mm (4.2 inches)	81%	extreme
June Weather	25°C (77°F)	126 mm (5.0 inches)	81%	extreme
July Weather	26°C (80°F)	115 mm (4.5 inches)	83%	extreme
August Weather	26°C (79°F)	138 mm (5.4 inches)	81%	very high
September Weather	24°C (75°F)	110 mm (4.3 inches)	82%	very high
October Weather	19°C (66°F)	120 mm (4.7 inches)	78%	very high
November Weather	11°C (53°F)	80 mm (3.2 inches)	86%	high
December Weather	9°C (49°F)	137 mm (5.4 inches)	89%	moderate