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December Weather in Waynesburg, United States

Last updated: June 24, 2025

In December, the average temperature in Waynesburg, United States hovers around 3°C (37°F). You can expect a minimum chill of -15°C (5°F) and a maximum of 18°C (65°F). During this time, precipitation averages 116 mm (4.6 in) over 12 days, contributing to the region's average humidity of 86%.

December Temperature in Waynesburg

In December in Waynesburg, the average temperature is 3°C (37°F), with maximums reaching 18°C (65°F) and minimums plummeting to as low as -15°C (5°F). Travelers should be prepared for a wide range of temperatures, ensuring they pack both warm clothing for the coldest days and lighter layers for milder afternoons.

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

The chart illustrates December temperature patterns in Waynesburg, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Waynesburg, 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 -15°C (5°F).
JanFebMarAprMayJunJulAugSepOctNovDec323643526370757368584337
Data source: Temperature data for Waynesburg 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 Waynesburg

In Waynesburg in December, the precipitation amount is 116 mm (4.6 in) over a span of 12 days.

December Precipitation Trends in Waynesburg

The chart displays monthly precipitation patterns in Waynesburg, 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 Waynesburg, December typically receives around 116 mm (4.6 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec8812111913214816714110112012087116
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Waynesburg

In Waynesburg in December humidity is 86%. With an average temperature of 3°C (37°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities uncomfortable and travel less enjoyable.

December Average Humidity in Waynesburg

This chart illustrates the average monthly humidity levels in Waynesburg, 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 Waynesburg is approximately 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%88%88%87%82%84%82%73%74%81%89%86%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Waynesburg

In Waynesburg 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 Waynesburg, you can check the information here.

Maximum UV Index Levels in Waynesburg for December

The chart shows the monthly maximum UV Index (UVI) for Waynesburg 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 Waynesburg typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec357910101098643
Data source: Waynesburg 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 Waynesburg Compares to Other Months

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

This table compares monthly weather conditions in Waynesburg, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (32°F)88 mm (3.5 inches)88%moderate
February Weather2°C (36°F)121 mm (4.8 inches)88%moderate
March Weather6°C (43°F)119 mm (4.7 inches)88%high
April Weather11°C (53°F)132 mm (5.2 inches)86%very high
May Weather17°C (63°F)148 mm (5.8 inches)82%very high
June Weather21°C (70°F)167 mm (6.6 inches)84%very high
July Weather24°C (75°F)141 mm (5.5 inches)82%very high
August Weather23°C (73°F)101 mm (4.0 inches)73%very high
September Weather20°C (68°F)120 mm (4.7 inches)73%very high
October Weather14°C (58°F)120 mm (4.7 inches)81%high
November Weather6°C (43°F)87 mm (3.4 inches)89%moderate
December Weather3°C (37°F)116 mm (4.6 inches)86%moderate

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