December Weather in Millersburg, United States

Last updated: June 24, 2025

In Millersburg, United States, the average temperature for December hovers around 3°C (37°F). However, you can expect a range from a chilly -12°C (10°F) to a mild 18°C (64°F). This month also sees about 88 mm (3.5 in) of precipitation over approximately 10 days, with humidity levels averaging a brisk 85%. Prepare for a chilly yet intriguing weather experience!

December Temperature in Millersburg

In December in Millersburg, the average temperature is 3°C (37°F). The maximum can reach 18°C (64°F), and the minimum can be as low as -12°C (10°F). Travelers should be prepared for a wide range of temperatures and dress in layers to stay comfortable.

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

The chart illustrates December temperature patterns in Millersburg, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Millersburg, December typically has an average temperature of 3°C (37°F), with highs reaching up to 18°C (64°F) and lows dropping to around -12°C (10°F).
JanFebMarAprMayJunJulAugSepOctNovDec323542526372777568584337
Data source: Temperature data for Millersburg 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 Millersburg

In Millersburg in December, the precipitation amount is 88 mm (3.5 in) spread over a duration of 10 days.

December Precipitation Trends in Millersburg

The chart displays monthly precipitation patterns in Millersburg, 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 Millersburg, December typically receives around 88 mm (3.5 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec6810092104120901221021221138988
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Millersburg

In Millersburg in December, humidity is 85%. With an average temperature of 3°C (37°F), this humidity feels like a chilling blanket enveloping you, making traveling uncomfortable as your clothes cling to your skin and the cold air bites at your face.

December Average Humidity in Millersburg

This chart illustrates the average monthly humidity levels in Millersburg, 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 Millersburg is approximately 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%85%85%83%75%74%65%62%66%79%87%85%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Millersburg

In Millersburg in December, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Millersburg, you can visit Hourly UV Index in Millersburg.

Maximum UV Index Levels in Millersburg for December

The chart shows the monthly maximum UV Index (UVI) for Millersburg 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 Millersburg typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356910101098642
Data source: Millersburg 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 Millersburg Compares to Other Months

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

This table compares monthly weather conditions in Millersburg, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (33°F)68 mm (2.7 inches)87%moderate
February Weather2°C (35°F)100 mm (3.9 inches)85%moderate
March Weather5°C (42°F)92 mm (3.6 inches)85%high
April Weather11°C (52°F)104 mm (4.1 inches)83%very high
May Weather17°C (63°F)120 mm (4.7 inches)75%very high
June Weather22°C (72°F)90 mm (3.5 inches)73%very high
July Weather25°C (77°F)122 mm (4.8 inches)65%very high
August Weather24°C (75°F)102 mm (4.0 inches)62%very high
September Weather20°C (69°F)122 mm (4.8 inches)66%very high
October Weather15°C (59°F)113 mm (4.4 inches)79%high
November Weather6°C (44°F)89 mm (3.5 inches)87%moderate
December Weather3°C (37°F)88 mm (3.5 inches)85%low

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