January Weather in Newnan, United States

Last updated: June 24, 2025

In Newnan, United States, the average temperature in January hovers around 8°C (46°F). Expect a wide temperature range: it can dip to a chilly -11°C (12°F) or soar to a pleasant 25°C (77°F). During this month, you'll experience precipitation totaling 106 mm (4.2 in) over about 9 days, accompanied by a notably high average humidity of 86%.

January Temperature in Newnan

In January in Newnan, the average temperature is 8°C (46°F). Maximums can reach 25°C (77°F), while minimums can drop as low as -11°C (12°F). Be prepared for a wide range of temperatures, making it essential to pack both warm and light clothing for your travels.

January Weather in Newnan: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Newnan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Newnan, January typically has an average temperature of 8°C (46°F), with highs reaching up to 25°C (77°F) and lows dropping to around -11°C (12°F).

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

January Precipitation in Newnan

In Newnan in January, the total precipitation amount is 106 mm (4.2 in), spread over the course of 9 days.

January Precipitation Trends in Newnan

The chart displays monthly precipitation patterns in Newnan, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Newnan, January typically receives around 106 mm (4.2 inches) of precipitation spread over approximately 9 days.

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

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Millimeters (mm) Inches (in)

January Humidity in Newnan

In Newnan in January humidity is 86%. With an average temperature of 8°C (46°F), this humidity feels like a damp chill enveloping you, making outdoor activities less enjoyable and requiring extra layers to stay comfortable while exploring.

January Average Humidity in Newnan

This chart illustrates the average monthly humidity levels in Newnan, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Newnan is approximately 86%, offering insight into how humid the weather typically is during this month.

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

January UV Index in Newnan

In Newnan in January, 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 Newnan for better planning.

Maximum UV Index Levels in Newnan for January

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

Data source: Newnan January 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 January Weather in Newnan Compares to Other Months

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

This table compares monthly weather conditions in Newnan, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	8°C (46°F)	106 mm (4.2 inches)	86%	moderate
February Weather	11°C (52°F)	142 mm (5.6 inches)	84%	high
March Weather	14°C (57°F)	119 mm (4.7 inches)	83%	very high
April Weather	17°C (63°F)	122 mm (4.8 inches)	81%	very high
May Weather	22°C (71°F)	90 mm (3.5 inches)	81%	extreme
June Weather	25°C (77°F)	118 mm (4.6 inches)	81%	extreme
July Weather	26°C (80°F)	113 mm (4.4 inches)	83%	extreme
August Weather	26°C (79°F)	132 mm (5.2 inches)	81%	very high
September Weather	24°C (75°F)	106 mm (4.2 inches)	82%	very high
October Weather	19°C (66°F)	115 mm (4.5 inches)	78%	very high
November Weather	11°C (53°F)	80 mm (3.2 inches)	86%	high
December Weather	9°C (49°F)	142 mm (5.6 inches)	89%	moderate