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December Weather in Slater-Marietta, United States

Last updated: June 24, 2025

In December, the average temperature in Slater-Marietta, United States hovers around 7°C (46°F), with a chill dips to a minimum of -8°C (19°F) and occasional highs reaching up to 23°C (74°F). Expect 147 mm (5.8 in) of precipitation spread over about 10 days, accompanied by a notably high average humidity of 88%.

December Temperature in Slater-Marietta

In December in Slater-Marietta, the average temperature is 7°C (46°F). The maximum can reach 23°C (74°F), while the minimum can drop as low as -8°C (19°F). Travelers should be prepared for a wide range of temperatures during this time.

December Weather in Slater-Marietta: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Slater-Marietta, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Slater-Marietta, December typically has an average temperature of 7°C (46°F), with highs reaching up to 23°C (74°F) and lows dropping to around -8°C (19°F).
JanFebMarAprMayJunJulAugSepOctNovDec424852606874787772635045
Data source: Temperature data for Slater-Marietta 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 Slater-Marietta

In Slater-Marietta in December, the precipitation amount is 147 mm (5.8 in) over the course of 10 days.

December Precipitation Trends in Slater-Marietta

The chart displays monthly precipitation patterns in Slater-Marietta, 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 Slater-Marietta, December typically receives around 147 mm (5.8 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec1131591111371348886115147158101147
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Slater-Marietta

In Slater-Marietta in December humidity is 88%. With an average temperature of 7°C (46°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities less enjoyable and requiring you to dress in layers to stay warm and dry while exploring.

December Average Humidity in Slater-Marietta

This chart illustrates the average monthly humidity levels in Slater-Marietta, 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 Slater-Marietta is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%86%86%82%85%85%83%76%76%80%88%88%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Slater-Marietta

In Slater-Marietta 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 Slater-Marietta for better planning.

Maximum UV Index Levels in Slater-Marietta for December

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

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

This table compares monthly weather conditions in Slater-Marietta, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather6°C (43°F)113 mm (4.5 inches)86%moderate
February Weather9°C (48°F)159 mm (6.3 inches)86%high
March Weather11°C (53°F)111 mm (4.4 inches)86%very high
April Weather15°C (60°F)137 mm (5.4 inches)82%very high
May Weather20°C (69°F)134 mm (5.3 inches)85%extreme
June Weather23°C (74°F)88 mm (3.4 inches)85%extreme
July Weather25°C (78°F)86 mm (3.4 inches)83%extreme
August Weather25°C (77°F)115 mm (4.5 inches)76%very high
September Weather22°C (73°F)147 mm (5.8 inches)76%very high
October Weather17°C (63°F)158 mm (6.2 inches)80%very high
November Weather10°C (50°F)101 mm (4.0 inches)88%high
December Weather7°C (46°F)147 mm (5.8 inches)88%moderate

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