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December Weather in Piedmont, United States

Last updated: June 24, 2025

In Piedmont, United States during December, the average temperature hovers around 6°C (44°F). Temperatures can vary significantly, with a minimum of -9°C (17°F) and a maximum reaching 27°C (80°F). This month typically sees 32 mm (1.3 in) of precipitation spread over about 3 days, contributing to an average humidity level of 84%.

December Temperature in Piedmont

In December in Piedmont, the average temperature is 6°C (44°F). The maximum can reach 27°C (80°F) and the minimum can be as low as -9°C (17°F). Be prepared for a wide range of temperatures if you're planning to travel during this month!

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

The chart illustrates December temperature patterns in Piedmont, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Piedmont, December typically has an average temperature of 6°C (44°F), with highs reaching up to 27°C (80°F) and lows dropping to around -9°C (17°F).
JanFebMarAprMayJunJulAugSepOctNovDec394053597079838176625043
Data source: Temperature data for Piedmont 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 Piedmont

In Piedmont in December, the total precipitation amount is 32 mm (1.3 in) over a span of 3 days.

December Precipitation Trends in Piedmont

The chart displays monthly precipitation patterns in Piedmont, 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 Piedmont, December typically receives around 32 mm (1.3 inches) of precipitation spread over approximately 3 days.
JanFebMarAprMayJunJulAugSepOctNovDec44398110514193747077943032
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Piedmont

In Piedmont in December humidity is 84%. With an average temperature of 6°C (44°F), this humidity feels like a chilly dampness that clings to your skin, making outdoor activities less comfortable and necessitating layered clothing to stay warm and dry while exploring the area.

December Average Humidity in Piedmont

This chart illustrates the average monthly humidity levels in Piedmont, 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 Piedmont is approximately 84%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec76%76%70%72%82%82%80%72%64%71%81%84%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Piedmont

In Piedmont 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 Piedmont for better planning.

Maximum UV Index Levels in Piedmont for December

The chart shows the monthly maximum UV Index (UVI) for Piedmont 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 Piedmont typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec46810101111119754
Data source: Piedmont 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 Piedmont Compares to Other Months

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

This table compares monthly weather conditions in Piedmont, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (39°F)44 mm (1.7 inches)76%moderate
February Weather4°C (40°F)39 mm (1.5 inches)76%high
March Weather12°C (54°F)81 mm (3.2 inches)70%very high
April Weather15°C (59°F)105 mm (4.1 inches)72%very high
May Weather21°C (70°F)141 mm (5.6 inches)82%very high
June Weather26°C (80°F)93 mm (3.7 inches)82%extreme
July Weather28°C (83°F)74 mm (2.9 inches)80%extreme
August Weather27°C (81°F)70 mm (2.7 inches)72%extreme
September Weather24°C (76°F)77 mm (3.0 inches)64%very high
October Weather16°C (62°F)94 mm (3.7 inches)71%high
November Weather10°C (50°F)30 mm (1.2 inches)81%moderate
December Weather6°C (44°F)32 mm (1.3 inches)84%moderate

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