Last updated: June 24, 2025
In December, the average temperature in Quincy, United States hovers around 0°C (33°F). Be prepared for a range of conditions, as temperatures can dip as low as -21°C (-5°F) and peak at a mild 16°C (61°F). Expect approximately 59 mm (2.3 in) of precipitation over around 10 days, contributing to an average humidity level of 86%. Stay cozy and ready for changing weather!
In December in Quincy, the average temperature is 0°C (33°F). Maximums can reach 16°C (61°F), while minimums can drop as low as -21°C (-5°F). Be prepared for a wide range of temperatures when traveling, as layering your clothing will help you stay comfortable.
In Quincy in December, the precipitation amount is 59 mm (2.3 in) over the course of 10 days.
In Quincy 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.
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.
UV Risk Categories
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.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -3°C (27°F) | 71 mm (2.8 inches) | 85% | moderate |
| February Weather | -2°C (28°F) | 73 mm (2.9 inches) | 85% | moderate |
| March Weather | 3°C (38°F) | 89 mm (3.5 inches) | 86% | high |
| April Weather | 8°C (47°F) | 95 mm (3.7 inches) | 87% | very high |
| May Weather | 16°C (60°F) | 139 mm (5.5 inches) | 81% | very high |
| June Weather | 21°C (71°F) | 107 mm (4.2 inches) | 82% | very high |
| July Weather | 23°C (75°F) | 121 mm (4.8 inches) | 81% | very high |
| August Weather | 22°C (72°F) | 72 mm (2.8 inches) | 79% | very high |
| September Weather | 19°C (66°F) | 81 mm (3.2 inches) | 78% | very high |
| October Weather | 12°C (54°F) | 126 mm (5.0 inches) | 81% | high |
| November Weather | 4°C (39°F) | 79 mm (3.1 inches) | 89% | moderate |
| December Weather | 0°C (33°F) | 59 mm (2.3 inches) | 86% | low |