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December Weather in Newnan, United States

Last updated: June 24, 2025

In Newnan, United States, the average temperature in December hovers around 9°C (49°F), with extremes ranging from a brisk -6°C (21°F) to a warm 24°C (76°F). Expect precipitation totaling 142 mm (5.6 in) across about 12 days, contributing to an elevated average humidity of 89%. Embrace the cozy and refreshing atmosphere of this month!

December Temperature in Newnan

In December in Newnan, the average temperature is 9°C (49°F). Maximum temperatures can reach 24°C (76°F), while minimums can drop as low as -6°C (21°F). Be prepared for a wide range of temperatures when traveling during this time.

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

The chart illustrates December 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, 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 (21°F).
JanFebMarAprMayJunJulAugSepOctNovDec465257627176797875665248
Data source: Temperature data for Newnan generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Newnan

In Newnan in December, the total precipitation amount is 142 mm (5.6 in), occurring over the course of 12 days.

December Precipitation Trends in Newnan

The chart displays monthly precipitation patterns in Newnan, 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 Newnan, December typically receives around 142 mm (5.6 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec1061421191229011811313310611580143
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Newnan

In Newnan 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 Newnan

This chart illustrates the average monthly humidity levels in Newnan, 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 Newnan is approximately 89%, offering insight into how humid the weather typically is during this month.
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 Newnan

In Newnan 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 Newnan for better planning.

Maximum UV Index Levels in Newnan for December

The chart shows the monthly maximum UV Index (UVI) for Newnan 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 Newnan typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec47810111111109864
Data source: Newnan 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 Newnan Compares to Other Months

Weather in Newnan varies notably across the year, with each month offering distinct climate conditions. This page compares December’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 December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather8°C (46°F)106 mm (4.2 inches)86%moderate
February Weather11°C (52°F)142 mm (5.6 inches)84%high
March Weather14°C (57°F)119 mm (4.7 inches)83%very high
April Weather17°C (63°F)122 mm (4.8 inches)81%very high
May Weather22°C (71°F)90 mm (3.5 inches)81%extreme
June Weather25°C (77°F)118 mm (4.6 inches)81%extreme
July Weather26°C (80°F)113 mm (4.4 inches)83%extreme
August Weather26°C (79°F)132 mm (5.2 inches)81%very high
September Weather24°C (75°F)106 mm (4.2 inches)82%very high
October Weather19°C (66°F)115 mm (4.5 inches)78%very high
November Weather11°C (53°F)80 mm (3.2 inches)86%high
December Weather9°C (49°F)142 mm (5.6 inches)89%moderate

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