The month of December in Québec experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 63% throughout the month.
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Québec, the chance of a wet day over the course of December is essentially constant, remaining around 29% throughout
The average sliding 31-day rainfall during December in Québec is rapidly decreasing, starting the month at 1.8 inches, when it rarely exceeds 3.2 inches or falls below 0.7 inches, and ending the month at 0.8 inches, when it rarely exceeds 1.8 inches.
The average sliding 31-day snowfall during December in Québec is very rapidly increasing, starting the month at 9.5 inches, when it rarely exceeds 17.8 inches or falls below 2.5 inches, and ending the month at 15.3 inches, when it rarely exceeds 26.0 inches or falls below 5.7 inches.
Over the course of December in Québec, the length of the day is essentially constant. The shortest day of the month is December 21, with 8 hours, 32 minutes of daylight and the longest day is December 1, with 8 hours, 49 minutes of daylight.
The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases.