This report describes the typical weather at the Vernon (Vernon, British Columbia, Canada) weather station over the course of an average September. It is based on the historical records from 2003 to 2012. Earlier records are either unavailable or unreliable.
Vernon, British Columbia has a humid continental climate with warm summers and no dry season. The area within 25 mi of this station is covered by forests (92%), lakes and rivers (4%), and grasslands (3%).
The month of September is characterized by rapidly falling daily high temperatures, with daily highs decreasing from 76°F to 64°F over the course of the month, exceeding 86°F or dropping below 56°F only one day in ten.
Over the course of September, the length of the day is rapidly decreasing. From the start to the end of the month, the length of the day decreases by 1:48 hours, implying an average day-over-day decrease of 3.6 minutes.
The shortest day of the month is September 30 with 11:39 hours of daylight; the longest day is September 1 with 13:28 hours of daylight.
The earliest sunrise is at 6:13am on September 1; the latest sunset is at 7:41pm on September 1; the latest sunrise is at 6:57am on September 30; the earliest sunset is at 6:36pm on September 30.
Daylight saving time is observed in 2012 but it neither starts nor ends in September, 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 September, or the weather station does not reliably report the conditions.
Either snow is exceptionally unlikely to fall at this location in September or this station does not reliably report precipitation types.
The relative humidity typically ranges from 38% (comfortable) to 94% (very humid) over the course of a typical September, rarely dropping below 24% (dry) and reaching as high as 100% (very humid).
The air is driest around September 1, at which time the relative humidity drops below 42% (comfortable) three days out of four; it is most humid around September 27, rising above 91% (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 September, the dew point typically varies from 39°F (dry) to 53°F (very comfortable) and is rarely below 32°F (dry) or above 58°F (comfortable).
The time of the month between September 1 and September 25 is the most comfortable, with dew points that are neither too dry nor too muggy.
Over the course of September typical wind speeds vary from 0 mph to 9 mph (calm to gentle breeze), rarely exceeding 11 mph (gentle breeze).
The highest average wind speed of 4 mph (light breeze) occurs around September 3, at which time the average daily maximum wind speed is 9 mph (gentle breeze).
The lowest average wind speed of 3 mph (light breeze) occurs around September 6, at which time the average daily maximum wind speed is 9 mph (gentle breeze).