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December Weather in Clayton, United States

Last updated: June 24, 2025

In December, the average temperature in Clayton, United States hovers around 3°C (37°F), with minimum lows of -18°C (0°F) and maximum highs reaching up to 18°C (65°F). Expect 97 mm (3.8 in) of precipitation over approximately 10 days, accompanied by a high average humidity of 87%. Prepare for a chilly and damp atmosphere!

December Temperature in Clayton

In December in Clayton, the average temperature is 3°C (37°F). Maximums can reach 18°C (65°F), while minimums can drop as low as -18°C (0°F). Be prepared for a wide range of temperatures during your travels!

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

The chart illustrates December temperature patterns in Clayton, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Clayton, December typically has an average temperature of 3°C (37°F), with highs reaching up to 18°C (65°F) and lows dropping to around -18°C (0°F).
JanFebMarAprMayJunJulAugSepOctNovDec313443526472767469584237
Data source: Temperature data for Clayton 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 Clayton

In Clayton in December, the total precipitation amount is 97 mm (3.8 in) over a span of 10 days.

December Precipitation Trends in Clayton

The chart displays monthly precipitation patterns in Clayton, 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 Clayton, December typically receives around 97 mm (3.8 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec771041181041311381118989999797
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Clayton

In Clayton in December, humidity is 87%. With an average temperature of 3°C (37°F), this humidity feels like a damp chill that clings to your skin, making outdoor activities uncomfortable and necessitating proper layers to stay warm while navigating the wet conditions.

December Average Humidity in Clayton

This chart illustrates the average monthly humidity levels in Clayton, 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 Clayton is approximately 87%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%88%87%85%81%82%81%73%73%78%89%87%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Clayton

In Clayton 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 Clayton, you can check the information here.

Maximum UV Index Levels in Clayton for December

The chart shows the monthly maximum UV Index (UVI) for Clayton 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 Clayton typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356910101098643
Data source: Clayton 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 Clayton Compares to Other Months

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

This table compares monthly weather conditions in Clayton, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (31°F)77 mm (3.0 inches)88%moderate
February Weather1°C (35°F)104 mm (4.1 inches)88%moderate
March Weather6°C (43°F)117 mm (4.6 inches)87%high
April Weather11°C (53°F)104 mm (4.1 inches)85%very high
May Weather18°C (65°F)131 mm (5.2 inches)81%very high
June Weather22°C (73°F)138 mm (5.4 inches)82%very high
July Weather25°C (77°F)111 mm (4.4 inches)81%very high
August Weather23°C (74°F)89 mm (3.5 inches)73%very high
September Weather21°C (70°F)89 mm (3.5 inches)73%very high
October Weather14°C (58°F)99 mm (3.9 inches)78%high
November Weather6°C (42°F)96 mm (3.8 inches)89%moderate
December Weather3°C (37°F)97 mm (3.8 inches)87%moderate

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