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December Weather in Unicoi, United States

Last updated: June 24, 2025

In December, the average temperature in Unicoi, United States hovers around 5°C (41°F), offering a chilly yet invigorating atmosphere. Expect minimum temperatures to plunge to -12°C (10°F), while highs can reach a pleasant 21°C (70°F). Rainfall is notable, with 125 mm (4.9 in) accumulating over about 13 days, contributing to an average humidity of 86% that envelops the region.

December Temperature in Unicoi

In December in Unicoi, the average temperature is 5°C (41°F). Maximum can reach 21°C (70°F) and minimum can be as low as -12°C (10°F). Travelers should be prepared for a wide range of temperatures, from chilly days to surprisingly warm afternoons.

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

The chart illustrates December temperature patterns in Unicoi, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Unicoi, December typically has an average temperature of 5°C (41°F), with highs reaching up to 21°C (70°F) and lows dropping to around -12°C (10°F).
JanFebMarAprMayJunJulAugSepOctNovDec374347546369737168584541
Data source: Temperature data for Unicoi 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 Unicoi

In Unicoi in December, the total precipitation amount is 125 mm (4.9 in), occurring over a span of 13 days.

December Precipitation Trends in Unicoi

The chart displays monthly precipitation patterns in Unicoi, 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 Unicoi, December typically receives around 125 mm (4.9 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec951451291371221191021189712283125
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Unicoi

In Unicoi in December humidity is 86%. With an average temperature of 5°C (41°F), this humidity feels like a heavy, damp blanket wrapping around you, making outdoor activities uncomfortable and travel quite challenging due to the chill combined with the stickiness in the air.

December Average Humidity in Unicoi

This chart illustrates the average monthly humidity levels in Unicoi, 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 Unicoi is approximately 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%87%86%84%83%83%79%66%68%78%89%86%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Unicoi

In Unicoi 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 Unicoi, you can check the information here.

Maximum UV Index Levels in Unicoi for December

The chart shows the monthly maximum UV Index (UVI) for Unicoi 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 Unicoi typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468101111111010853
Data source: Unicoi 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 Unicoi Compares to Other Months

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

This table compares monthly weather conditions in Unicoi, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (37°F)95 mm (3.7 inches)87%moderate
February Weather6°C (43°F)145 mm (5.7 inches)87%high
March Weather8°C (47°F)129 mm (5.1 inches)86%very high
April Weather12°C (55°F)137 mm (5.4 inches)84%very high
May Weather17°C (64°F)122 mm (4.8 inches)83%extreme
June Weather20°C (69°F)118 mm (4.7 inches)83%extreme
July Weather23°C (73°F)102 mm (4.0 inches)79%extreme
August Weather22°C (71°F)118 mm (4.7 inches)66%very high
September Weather20°C (68°F)97 mm (3.8 inches)68%very high
October Weather15°C (59°F)122 mm (4.8 inches)78%very high
November Weather7°C (45°F)83 mm (3.3 inches)89%moderate
December Weather5°C (41°F)125 mm (4.9 inches)86%moderate

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