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December Weather in Quincy, United States

Last updated: June 24, 2025

In Quincy, United States, the average temperature in December hovers around 0°C (32°F), but expect a range from a chilly -14°C (8°F) to a milder 18°C (64°F). With an average precipitation of 41 mm (1.6 in) spread over 10 days, you'll experience a fair amount of moisture in the air, complemented by an average humidity level of 86%. Be sure to dress warmly and prepare for the wet conditions!

December Temperature in Quincy

In December in Quincy, the average temperature is 0°C (32°F). Maximum temperatures can reach 18°C (64°F), while minimums can drop to as low as -14°C (8°F). Be prepared for a wide range of temperatures during your travels!

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

The chart illustrates December temperature patterns in Quincy, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Quincy, December typically has an average temperature of 0°C (32°F), with highs reaching up to 18°C (64°F) and lows dropping to around -14°C (8°F).
JanFebMarAprMayJunJulAugSepOctNovDec303242526370777665503932
Data source: Temperature data for Quincy 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 Quincy

In Quincy in December, the precipitation amount is 41 mm (1.6 in) spread over 10 days.

December Precipitation Trends in Quincy

The chart displays monthly precipitation patterns in Quincy, 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 Quincy, December typically receives around 41 mm (1.6 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec484127261672314333942
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Quincy

In Quincy in December humidity is 86%. With an average temperature of 0°C (32°F), this humidity feels like a biting chill that seeps into your bones, making travel feel uncomfortable and damp, as the cold air combines with the moisture to create a brisk sensation that may deter outdoor exploration.

December Average Humidity in Quincy

This chart illustrates the average monthly humidity levels in Quincy, 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 Quincy is approximately 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%86%86%82%77%79%77%62%60%80%87%86%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Quincy

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

Maximum UV Index Levels in Quincy for December

The chart shows the monthly maximum UV Index (UVI) for Quincy 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 Quincy typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2356891097532
Data source: Quincy 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 Quincy Compares to Other Months

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

This table compares monthly weather conditions in Quincy, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (30°F)48 mm (1.9 inches)85%low
February Weather0°C (32°F)40 mm (1.6 inches)86%moderate
March Weather6°C (43°F)27 mm (1.1 inches)86%moderate
April Weather11°C (52°F)26 mm (1.0 inches)82%high
May Weather17°C (63°F)16 mm (0.6 inches)77%very high
June Weather21°C (70°F)7 mm (0.3 inches)79%very high
July Weather25°C (77°F)1 mm (0.1 inches)77%very high
August Weather24°C (76°F)3 mm (0.1 inches)62%very high
September Weather18°C (65°F)14 mm (0.6 inches)60%high
October Weather10°C (50°F)33 mm (1.3 inches)80%moderate
November Weather4°C (39°F)39 mm (1.5 inches)87%moderate
December Weather0°C (32°F)41 mm (1.6 inches)86%low

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