This report describes the typical weather at the Québec City Jean Lesage International Airport (Quebec City, Canada) weather station over the course of an average October. It is based on the historical records from 2001 to 2012. Earlier records are either unavailable or unreliable.
Quebec City, Quebec has a humid continental climate with warm summers and no dry season. The area within 25 mi of this station is covered by forests (66%), croplands (18%), grasslands (9%), and lakes and rivers (7%).
The month of October is characterized by very rapidly falling daily high temperatures, with daily highs decreasing from 61°F to 45°F over the course of the month, exceeding 70°F or dropping below 38°F only one day in ten.
Over the course of October, the length of the day is rapidly decreasing. From the start to the end of the month, the length of the day decreases by 1:36 hours, implying an average day-over-day decrease of 3.1 minutes.
The shortest day of the month is October 31 with 10:04 hours of daylight; the longest day is October 1 with 11:39 hours of daylight.
The earliest sunrise is at 6:45am on October 1; the latest sunset is at 6:24pm on October 1; the latest sunrise is at 7:27am on October 31; the earliest sunset is at 5:31pm on October 31.
Daylight saving time is observed in 2012 but it neither starts nor ends in October, so the entire month is in daylight time.
The median cloud cover ranges from 78% (partly cloudy) to 89% (mostly cloudy). The trend is for the sky to be becoming cloudier with the median cloud cover increasing by 12% from the start to the end of the month.
On October 1, the clearest day of the month, the sky is clear, mostly clear, or partly cloudy 39% of the time, and overcast or mostly cloudy 61% of the time.
On October 31, the cloudiest day of the month, the sky is overcast, mostly cloudy, or partly cloudy 77% of the time, and clear or mostly clear 23% of the time.
The probability that precipitation will be observed at this location varies throughout the month. Precipitation is most likely around October 31, occurring in 62% of days. Precipitation is least likely around October 1, occurring in 53% of days.
Throughout October, the most common forms of precipitation are light rain, light snow, and moderate rain.
Light rain is the most severe precipitation observed during 58% of those days with precipitation. It is most likely around October 1, when it is observed during 35% of all days.
Light snow is the most severe precipitation observed during 15% of those days with precipitation. It is most likely around October 31, when it is observed during 14% of all days.
Moderate rain is the most severe precipitation observed during 12% of those days with precipitation. It is most likely around October 1, when it is observed during 9% of all days.
The likelihood of snow falling is highest around October 31, occurring in 24% of days.
Either snow rarely accumulates at this location in October or snow depth measurements are unavailable or unreliable.
The relative humidity typically ranges from 58% (mildly humid) to 95% (very humid) over the course of a typical October, rarely dropping below 43% (comfortable) and reaching as high as 100% (very humid).
The air is driest around October 15, at which time the relative humidity drops below 67% (mildly humid) three days out of four; it is most humid around October 1, rising above 92% (very humid) three days out of four.
Dew point is often a better measure of how comfortable a person will find the weather than relative humidity because it more directly relates to whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid.
Over the course of a typical October, the dew point typically varies from 26°F (dry) to 51°F (very comfortable) and is rarely below 18°F (dry) or above 59°F (comfortable).
Over the course of October typical wind speeds vary from 1 mph to 16 mph (light air to moderate breeze), rarely exceeding 25 mph (strong breeze).
The highest average wind speed of 9 mph (gentle breeze) occurs around October 20, at which time the average daily maximum wind speed is 16 mph (moderate breeze).
The lowest average wind speed of 8 mph (gentle breeze) occurs around October 1, at which time the average daily maximum wind speed is 15 mph (moderate breeze).