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December Weather in Chillicothe, United States

Last updated: June 24, 2025

In December, the average temperature in Chillicothe, United States is a cool 8°C (47°F). Temperatures can swing notably, with minimums dipping to -7°C (20°F) and soaring to a warm 30°C (87°F). Expect about 25 mm (1.0 in) of precipitation spread over 2 days, and enjoy the refreshing atmosphere with an average humidity of 84%.

December Temperature in Chillicothe

In December in Chillicothe, the average temperature is 8°C (47°F). The maximum can reach 30°C (87°F), and the minimum can be as low as -7°C (20°F). Be prepared for a wide range of temperatures while traveling during this time.

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

The chart illustrates December temperature patterns in Chillicothe, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Chillicothe, December typically has an average temperature of 8°C (47°F), with highs reaching up to 30°C (87°F) and lows dropping to around -7°C (20°F).
JanFebMarAprMayJunJulAugSepOctNovDec424457637381868477645346
Data source: Temperature data for Chillicothe 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 Chillicothe

In Chillicothe in December, the precipitation amount is 25 mm (1.0 in) over the course of 2 days.

December Precipitation Trends in Chillicothe

The chart displays monthly precipitation patterns in Chillicothe, 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 Chillicothe, December typically receives around 25 mm (1.0 inches) of precipitation spread over approximately 2 days.
JanFebMarAprMayJunJulAugSepOctNovDec3124589311063234084692225
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Chillicothe

In Chillicothe in December, humidity is 84%. With an average temperature of 8°C (47°F), this humidity feels like a damp blanket wrapping around you, making travel feel heavy and a bit lethargic, as the air thickens with moisture and each step becomes a little more cumbersome.

December Average Humidity in Chillicothe

This chart illustrates the average monthly humidity levels in Chillicothe, 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 Chillicothe is approximately 84%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec76%76%70%72%82%82%80%72%64%71%81%84%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Chillicothe

In Chillicothe 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 Chillicothe for better planning.

Maximum UV Index Levels in Chillicothe for December

The chart shows the monthly maximum UV Index (UVI) for Chillicothe 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 Chillicothe typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468101111121110854
Data source: Chillicothe 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 Chillicothe Compares to Other Months

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

This table compares monthly weather conditions in Chillicothe, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather6°C (42°F)31 mm (1.2 inches)76%moderate
February Weather7°C (44°F)24 mm (0.9 inches)76%high
March Weather14°C (57°F)58 mm (2.3 inches)70%very high
April Weather17°C (63°F)93 mm (3.7 inches)72%very high
May Weather23°C (73°F)110 mm (4.3 inches)82%extreme
June Weather27°C (82°F)62 mm (2.5 inches)82%extreme
July Weather30°C (86°F)23 mm (0.9 inches)80%extreme
August Weather29°C (84°F)40 mm (1.6 inches)72%extreme
September Weather25°C (77°F)84 mm (3.3 inches)64%very high
October Weather18°C (64°F)69 mm (2.7 inches)71%very high
November Weather12°C (53°F)22 mm (0.9 inches)81%moderate
December Weather8°C (47°F)25 mm (1.0 inches)84%moderate

Compare Chillicothe's Climate with Cities Worldwide