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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 11°C (53°F), with extremes ranging from a chilly -5°C (23°F) to a warm 27°C (80°F). During this time, expect 132 mm (5.2 in) of precipitation spread over 11 days, making humidity levels climb to an average of 86%.

December Temperature in Clayton

In December in Clayton, the average temperature is 11°C (53°F). Maximums can reach 27°C (80°F), and minimums can be as low as -5°C (23°F). Be prepared for a wide range of temperatures when traveling to Clayton 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 11°C (53°F), with highs reaching up to 27°C (80°F) and lows dropping to around -5°C (23°F).
JanFebMarAprMayJunJulAugSepOctNovDec505661667479818178705652
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 132 mm (5.2 in), which occurs over a span of 11 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 132 mm (5.2 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec1081179412511312010712311211965132
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 11°C (53°F), this humidity feels like a heavy blanket that dampens the air, making traveling uncomfortable and a bit stifling.

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.
JanFebMarAprMayJunJulAugSepOctNovDec83%82%79%77%74%70%78%78%79%74%83%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 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 Clayton for better planning.

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 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec579101111111110864
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 Weather10°C (50°F)108 mm (4.2 inches)83%moderate
February Weather13°C (56°F)116 mm (4.6 inches)82%high
March Weather16°C (61°F)94 mm (3.7 inches)79%very high
April Weather19°C (66°F)125 mm (4.9 inches)77%very high
May Weather23°C (74°F)113 mm (4.4 inches)74%extreme
June Weather26°C (79°F)120 mm (4.7 inches)70%extreme
July Weather27°C (81°F)107 mm (4.2 inches)78%extreme
August Weather27°C (81°F)123 mm (4.8 inches)78%extreme
September Weather25°C (78°F)112 mm (4.4 inches)79%very high
October Weather21°C (70°F)119 mm (4.7 inches)74%very high
November Weather14°C (57°F)65 mm (2.5 inches)83%high
December Weather11°C (53°F)132 mm (5.2 inches)86%moderate

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