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December Weather in Rocky Top, United States

Last updated: June 24, 2025

In December, the average temperature in Rocky Top, United States hovers around 6°C (43°F). Expect a chill, with minimum temperatures dipping to -11°C (12°F) and occasionally soaring to a maximum of 22°C (72°F). Be prepared for rain, as the precipitation amount typically reaches 140 mm (5.5 in) over 10 days. The air will feel quite humid, with an average humidity of 88%, making it essential to dress in layers!

December Temperature in Rocky Top

In December in Rocky Top, the average temperature is 6°C (43°F). Maximums can reach 22°C (72°F), while minimums can drop as low as -11°C (12°F). It's advisable to pack layers to stay comfortable during your travels.

December Weather in Rocky Top: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Rocky Top, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rocky Top, December typically has an average temperature of 6°C (43°F), with highs reaching up to 22°C (72°F) and lows dropping to around -11°C (12°F).
JanFebMarAprMayJunJulAugSepOctNovDec394450576773777571614743
Data source: Temperature data for Rocky Top 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 Rocky Top

In Rocky Top in December, the total precipitation amount is 140 mm (5.5 in) spread over a period of 10 days.

December Precipitation Trends in Rocky Top

The chart displays monthly precipitation patterns in Rocky Top, 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 Rocky Top, December typically receives around 140 mm (5.5 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec10218815715013012814115210612980140
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Rocky Top

In Rocky Top in December, humidity is 88%. With an average temperature of 6°C (43°F), this humidity feels like a damp chill that seeps into your bones, making traveling uncomfortable and prompting you to seek warm shelter frequently.

December Average Humidity in Rocky Top

This chart illustrates the average monthly humidity levels in Rocky Top, 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 Rocky Top is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%88%87%84%84%83%79%66%67%76%89%88%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Rocky Top

In Rocky Top in December, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Rocky Top, you can check the information here.

Maximum UV Index Levels in Rocky Top for December

The chart shows the monthly maximum UV Index (UVI) for Rocky Top 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 Rocky Top typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec46810111111109753
Data source: Rocky Top 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 Rocky Top Compares to Other Months

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

This table compares monthly weather conditions in Rocky Top, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (39°F)102 mm (4.0 inches)88%moderate
February Weather7°C (44°F)188 mm (7.4 inches)88%high
March Weather10°C (51°F)157 mm (6.2 inches)87%very high
April Weather14°C (57°F)150 mm (5.9 inches)84%very high
May Weather20°C (67°F)130 mm (5.1 inches)84%extreme
June Weather23°C (73°F)128 mm (5.0 inches)83%extreme
July Weather25°C (77°F)141 mm (5.5 inches)79%extreme
August Weather24°C (75°F)151 mm (6.0 inches)66%very high
September Weather22°C (71°F)106 mm (4.2 inches)67%very high
October Weather16°C (61°F)129 mm (5.1 inches)76%high
November Weather8°C (47°F)80 mm (3.1 inches)89%moderate
December Weather6°C (43°F)140 mm (5.5 inches)88%moderate

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