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December Weather in Clayton, United States

Last updated: June 24, 2025

In Clayton, United States, the average temperature in December hovers around 2°C (36°F). However, be prepared for a range of temperatures, with minimums plummeting to -20°C (-3°F) and maximums reaching a pleasant 22°C (73°F). This month also brings 47 mm (1.9 in) of precipitation spread over about 6 days, contributing to an average humidity level of 86%. Embrace the conditions, but don’t forget your umbrella!

December Temperature in Clayton

In December in Clayton, the average temperature is 2°C (36°F). Maximums can reach 22°C (73°F) and minimums can be as low as -20°C (-3°F). Be prepared for a wide range of temperatures when traveling during this month.

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 2°C (36°F), with highs reaching up to 22°C (73°F) and lows dropping to around -20°C (-3°F).
JanFebMarAprMayJunJulAugSepOctNovDec283143526575787570564136
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 precipitation amount is 47 mm (1.9 in) over the course of 6 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 47 mm (1.9 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec62641231041621198998901045947
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 86%. With an average temperature of 2°C (36°F), this humidity feels like a biting chill that clings to your skin, making outdoor exploration uncomfortable and dampening any enthusiasm for travel.

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 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%80%80%80%82%83%81%80%76%76%85%86%
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.
JanFebMarAprMayJunJulAugSepOctNovDec357910111198643
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 Weather-2°C (28°F)62 mm (2.4 inches)82%moderate
February Weather-1°C (31°F)64 mm (2.5 inches)80%moderate
March Weather6°C (44°F)123 mm (4.8 inches)80%high
April Weather11°C (52°F)104 mm (4.1 inches)80%very high
May Weather18°C (65°F)162 mm (6.4 inches)82%very high
June Weather24°C (75°F)119 mm (4.7 inches)83%extreme
July Weather26°C (78°F)88 mm (3.5 inches)81%extreme
August Weather24°C (75°F)98 mm (3.9 inches)80%very high
September Weather21°C (71°F)90 mm (3.5 inches)76%very high
October Weather14°C (57°F)104 mm (4.1 inches)76%high
November Weather5°C (42°F)59 mm (2.3 inches)85%moderate
December Weather2°C (36°F)47 mm (1.9 inches)86%moderate

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