December Weather in Quincy, United States

Last updated: June 24, 2025

In December, the average temperature in Quincy, United States hovers around -1°C (31°F). It can swing from a chilly -16°C (4°F) at its lowest to a mild 14°C (58°F) at its peak. Expect about 167 mm (6.6 in) of precipitation spread across 11 days, contributing to an average humidity of 83%. 🌧️

December Temperature in Quincy

In December in Quincy, the average temperature is -1°C (31°F). The maximum can reach 14°C (58°F), while the minimum can drop as low as -16°C (4°F). It's essential to pack warm clothing if you're planning to visit during this time.

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 -1°C (31°F), with highs reaching up to 14°C (58°F) and lows dropping to around -16°C (4°F).

Data source: Temperature data for Quincy generated using information from the Copernicus Climate Change Service.

December Precipitation in Quincy

In Quincy in December, the total precipitation amount is 167 mm (6.6 in), occurring over the course of 11 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 167 mm (6.6 inches) of precipitation spread over approximately 11 days.

Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

December Humidity in Quincy

In Quincy in December humidity is 83%. With an average temperature of -1°C (31°F), this humidity feels like a heavy, icy blanket enveloping you, making each step outside feel like a struggle against the cold, damp air that clings to your skin, often leaving you wishing for warmth and refuge indoors.

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 83%, offering insight into how humid the weather typically is during this month.

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 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 Quincy, you can check the information here.

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 3, which falls under the moderate exposure category.

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.
	Temperature	Precipitation	Humidity	UV
January Weather	0°C (33°F)	206 mm (8.1 inches)	84%	moderate
February Weather	0°C (33°F)	228 mm (9.0 inches)	84%	moderate
March Weather	2°C (37°F)	193 mm (7.6 inches)	83%	very high
April Weather	7°C (45°F)	97 mm (3.8 inches)	81%	very high
May Weather	12°C (54°F)	65 mm (2.6 inches)	74%	extreme
June Weather	18°C (65°F)	13 mm (0.5 inches)	64%	extreme
July Weather	23°C (74°F)	5 mm (0.2 inches)	44%	extreme
August Weather	22°C (72°F)	8 mm (0.3 inches)	36%	extreme
September Weather	17°C (63°F)	24 mm (1.0 inches)	44%	very high
October Weather	10°C (50°F)	52 mm (2.0 inches)	65%	high
November Weather	4°C (40°F)	100 mm (3.9 inches)	84%	moderate
December Weather	-1°C (31°F)	167 mm (6.6 inches)	83%	moderate