This report describes the typical weather at the Toronto City (Toronto, Ontario, Canada) weather station over the course of an average December. It is based on the historical records from 2006 to 2012. Earlier records are either unavailable or unreliable.
Toronto, Ontario has a humid continental climate with warm summers and no dry season. The area within 25 mi of this station is covered by oceans and seas (42%), grasslands (40%), built-up areas (9%), and forests (9%).
The month of December is characterized by falling daily high temperatures, with daily highs ranging from 40°F to 35°F over the course of the month, exceeding 47°F or dropping below 27°F only one day in ten.
Over the course of December, the length of the day is essentially constant. The shortest day of the month is December 21 with 8:55 hours of daylight; the longest day is December 1 with 9:10 hours of daylight.
The earliest sunrise is at 7:31am on December 1; the latest sunset is at 4:51pm on December 31; the latest sunrise is at 7:51am on December 29; the earliest sunset is at 4:40pm on December 12.
Daylight saving time is observed in 2012 but it neither starts nor ends in December, so the entire month is in standard time.
This weather station does not reliably report sky cover.
There is either very little precipitation at this location in December, or the weather station does not reliably report the conditions.
Either snow is exceptionally unlikely to fall at this location in December or this station does not reliably report precipitation types.
The relative humidity typically ranges from 63% (mildly humid) to 91% (very humid) over the course of a typical December, rarely dropping below 51% (mildly humid) and reaching as high as 98% (very humid).
The air is driest around December 13, at which time the relative humidity drops below 69% (mildly humid) three days out of four; it is most humid around December 29, rising above 87% (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 December, the dew point typically varies from 18°F (dry) to 35°F (dry) and is rarely below 7°F (dry) or above 43°F (dry).
This weather station does not reliably report the wind speed or direction in December.