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December Weather in Clay, United States

Last updated: June 24, 2025

In Clay, United States during December, the average temperature rests comfortably at 9°C (49°F). However, temperatures can vary significantly, with a minimum of -6°C (21°F) and a maximum reaching 24°C (75°F). Expect an average precipitation of 151 mm (5.9 in) over 12 days, contributing to a notably high average humidity of 88%. Stay prepared for all that this month brings!

December Temperature in Clay

In December in Clay, the average temperature is 9°C (49°F). Maximum temperatures can reach 24°C (75°F), while minimums can drop as low as -6°C (21°F). Be prepared for a wide range of temperatures when traveling, so pack accordingly!

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

The chart illustrates December temperature patterns in Clay, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Clay, December typically has an average temperature of 9°C (49°F), with highs reaching up to 24°C (75°F) and lows dropping to around -6°C (21°F).
JanFebMarAprMayJunJulAugSepOctNovDec465157637277807976675249
Data source: Temperature data for Clay 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 Clay

In Clay in December, the precipitation amount is 151 mm (5.9 in) over the course of 12 days.

December Precipitation Trends in Clay

The chart displays monthly precipitation patterns in Clay, 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 Clay, December typically receives around 151 mm (5.9 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec1241801581571021381051239212784151
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Clay

In Clay in December, humidity is 88%. With an average temperature of 9°C (49°F), this humidity feels like a damp chill that seeps into your bones, making traveling uncomfortable and requiring extra layers to stay warm and dry.

December Average Humidity in Clay

This chart illustrates the average monthly humidity levels in Clay, 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 Clay is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%84%82%82%81%77%77%72%73%73%85%88%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Clay

In Clay 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 Clay for better planning.

Maximum UV Index Levels in Clay for December

The chart shows the monthly maximum UV Index (UVI) for Clay 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 Clay typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec47810111111109764
Data source: Clay 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 Clay Compares to Other Months

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

This table compares monthly weather conditions in Clay, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather8°C (46°F)124 mm (4.9 inches)85%moderate
February Weather11°C (52°F)180 mm (7.1 inches)84%high
March Weather14°C (58°F)158 mm (6.2 inches)82%very high
April Weather17°C (63°F)157 mm (6.2 inches)82%very high
May Weather22°C (72°F)102 mm (4.0 inches)81%extreme
June Weather25°C (77°F)138 mm (5.4 inches)77%extreme
July Weather27°C (80°F)105 mm (4.1 inches)77%extreme
August Weather26°C (80°F)123 mm (4.8 inches)72%very high
September Weather24°C (76°F)91 mm (3.6 inches)73%very high
October Weather19°C (67°F)127 mm (5.0 inches)73%high
November Weather11°C (53°F)84 mm (3.3 inches)85%high
December Weather9°C (49°F)151 mm (5.9 inches)88%moderate

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