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December Weather in Hillsdale, United States

Last updated: June 24, 2025

In December, the average temperature in Hillsdale, United States hovers around 0°C (33°F), with minimums dipping as low as -22°C (-8°F) and occasional peaks reaching 16°C (60°F). Expect about 58 mm (2.3 in) of precipitation spread over 11 days, contributing to an average humidity level of 86%.

December Temperature in Hillsdale

In December in Hillsdale, the average temperature is 0°C (33°F). The maximum can reach 16°C (60°F), and the minimum can be as low as -22°C (-8°F). Travelers should be prepared for a wide range of temperatures and dress accordingly for both mild and chilly conditions.

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

The chart illustrates December temperature patterns in Hillsdale, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hillsdale, December typically has an average temperature of 0°C (33°F), with highs reaching up to 16°C (60°F) and lows dropping to around -22°C (-8°F).
JanFebMarAprMayJunJulAugSepOctNovDec262737476070747165543932
Data source: Temperature data for Hillsdale 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 Hillsdale

In Hillsdale in December, the precipitation amount is 58 mm (2.3 in) over the course of 11 days.

December Precipitation Trends in Hillsdale

The chart displays monthly precipitation patterns in Hillsdale, 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 Hillsdale, December typically receives around 58 mm (2.3 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec7173899614210712477781218058
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Hillsdale

In Hillsdale in December humidity is 86%. With an average temperature of 0°C (33°F), this humidity feels like a damp chill that permeates your clothes, making traveling uncomfortable and necessitating warm, layered clothing to stay dry and cozy.

December Average Humidity in Hillsdale

This chart illustrates the average monthly humidity levels in Hillsdale, 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 Hillsdale is approximately 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%87%87%88%81%82%81%78%78%82%89%86%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Hillsdale

In Hillsdale 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 Hillsdale, you can visit Hourly UV Index in Hillsdale.

Maximum UV Index Levels in Hillsdale for December

The chart shows the monthly maximum UV Index (UVI) for Hillsdale 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 Hillsdale typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec35699101098642
Data source: Hillsdale 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 Hillsdale Compares to Other Months

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

This table compares monthly weather conditions in Hillsdale, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-3°C (26°F)71 mm (2.8 inches)88%moderate
February Weather-3°C (28°F)73 mm (2.9 inches)87%moderate
March Weather3°C (38°F)89 mm (3.5 inches)87%high
April Weather8°C (47°F)96 mm (3.8 inches)87%very high
May Weather15°C (60°F)142 mm (5.6 inches)81%very high
June Weather21°C (70°F)107 mm (4.2 inches)82%very high
July Weather23°C (74°F)124 mm (4.9 inches)81%very high
August Weather22°C (71°F)77 mm (3.0 inches)78%very high
September Weather19°C (66°F)78 mm (3.1 inches)78%very high
October Weather12°C (54°F)121 mm (4.8 inches)82%high
November Weather4°C (39°F)80 mm (3.2 inches)89%moderate
December Weather0°C (33°F)58 mm (2.3 inches)86%low

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