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December Weather in Shelbyville, United States

Last updated: June 24, 2025

In December, the average temperature in Shelbyville, United States hovers around 2°C (37°F), with a potential minimum dip to -19°C (-3°F) and a maximum rise to 23°C (74°F). Expect about 41 mm (1.6 in) of precipitation spread over five days, contributing to a notable average humidity level of 86%. Prepare for these diverse climate conditions as you plan your visit!

December Temperature in Shelbyville

In December in Shelbyville, the average temperature is 2°C (37°F). Maximums can reach 23°C (74°F), while minimums can be as low as -19°C (-3°F). Be sure to pack layers for your trip, as temperatures can vary significantly throughout the day.

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

The chart illustrates December temperature patterns in Shelbyville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Shelbyville, December typically has an average temperature of 2°C (37°F), with highs reaching up to 23°C (74°F) and lows dropping to around -19°C (-3°F).
JanFebMarAprMayJunJulAugSepOctNovDec293244536676797571574236
Data source: Temperature data for Shelbyville 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 Shelbyville

In Shelbyville in December, the precipitation amount is 41 mm (1.6 in) over a period of 5 days.

December Precipitation Trends in Shelbyville

The chart displays monthly precipitation patterns in Shelbyville, 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 Shelbyville, December typically receives around 41 mm (1.6 inches) of precipitation spread over approximately 5 days.
JanFebMarAprMayJunJulAugSepOctNovDec615711510518511785100661095341
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Shelbyville

In Shelbyville in December, humidity is 86%. With an average temperature of 2°C (37°F), this humidity feels like a chilly dampness that clings to your clothes and makes outdoor activities quite uncomfortable for traveling.

December Average Humidity in Shelbyville

This chart illustrates the average monthly humidity levels in Shelbyville, 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 Shelbyville 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 Shelbyville

In Shelbyville 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 Shelbyville, you can check the information here.

Maximum UV Index Levels in Shelbyville for December

The chart shows the monthly maximum UV Index (UVI) for Shelbyville 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 Shelbyville typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3579101111109643
Data source: Shelbyville 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 Shelbyville Compares to Other Months

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

This table compares monthly weather conditions in Shelbyville, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (29°F)61 mm (2.4 inches)82%moderate
February Weather0°C (32°F)57 mm (2.2 inches)80%moderate
March Weather7°C (45°F)115 mm (4.5 inches)80%high
April Weather12°C (53°F)105 mm (4.1 inches)80%very high
May Weather19°C (66°F)185 mm (7.3 inches)82%very high
June Weather24°C (76°F)117 mm (4.6 inches)83%extreme
July Weather26°C (79°F)85 mm (3.4 inches)81%extreme
August Weather24°C (76°F)100 mm (3.9 inches)80%very high
September Weather22°C (71°F)66 mm (2.6 inches)76%very high
October Weather14°C (57°F)109 mm (4.3 inches)76%high
November Weather6°C (43°F)53 mm (2.1 inches)85%moderate
December Weather2°C (37°F)41 mm (1.6 inches)86%moderate

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