This report describes the typical weather at the Hamilton Rbg Cs (Hamilton, Ontario, Canada) weather station over the course of an average April. It is based on the historical records from 2005 to 2012. Earlier records are either unavailable or unreliable.
Hamilton, Ontario has a humid continental climate with warm summers and no dry season. The area within 25 mi of this station is covered by grasslands (56%), forests (20%), oceans and seas (15%), croplands (6%), and built-up areas (2%).
The month of April is characterized by rapidly rising daily high temperatures, with daily highs increasing from 49°F to 59°F over the course of the month, exceeding 70°F or dropping below 39°F only one day in ten.
Over the course of April, the length of the day is increasing. From the start to the end of the month, the length of the day increases by 1:21 hours, implying an average day-over-day increase of 2.7 minutes.
The shortest day of the month is April 1 with 12:46 hours of daylight; the longest day is April 30 with 14:07 hours of daylight.
The earliest sunrise is at 6:13am on April 30; the latest sunset is at 8:21pm on April 30; the latest sunrise is at 7:01am on April 1; the earliest sunset is at 7:47pm on April 1.
Daylight savings time is observed in 2012 but it neither starts nor ends in April, so the entire month is in daylight time.
This weather station does not reliably report sky cover.
There is either very little precipitation at this location in April, or the weather station does not reliably report the conditions.
Either snow is exceptionally unlikely to fall at this location in April or this station does not reliably report precipitation types.
The relative humidity typically ranges from 45% (comfortable) to 90% (very humid) over the course of a typical April, rarely dropping below 26% (dry) and reaching as high as 99% (very humid).
The air is driest around April 20, at which time the relative humidity drops below 55% (mildly humid) three days out of four; it is most humid around April 1, rising above 84% (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 April, the dew point typically varies from 24°F (dry) to 45°F (dry) and is rarely below 13°F (dry) or above 55°F (very comfortable).
Over the course of April typical wind speeds vary from 0 mph to 10 mph (calm to gentle breeze), rarely exceeding 15 mph (moderate breeze).
The highest average wind speed of 6 mph (light breeze) occurs around April 11, at which time the average daily maximum wind speed is 10 mph (gentle breeze).
The lowest average wind speed of 5 mph (light breeze) occurs around April 30, at which time the average daily maximum wind speed is 9 mph (gentle breeze).