This report describes the typical weather at the Denver International Airport (Denver, Colorado, United States) weather station over the course of an average June. It is based on the historical records from 1995 to 2012. Earlier records are either unavailable or unreliable.
Denver, Colorado has a cold semi-arid steppe climate. The area within 25 mi of this station is covered by grasslands (86%), built-up areas (10%), and croplands (3%).
The month of June is characterized by rapidly rising daily high temperatures, with daily highs increasing from 76°F to 87°F over the course of the month, exceeding 94°F or dropping below 63°F only one day in ten.
Over the course of June, the length of the day is essentially constant. The shortest day of the month is June 1 with 14:49 hours of daylight; the longest day is June 16 with 15:00 hours of daylight.
The earliest sunrise is at 5:29am on June 15; the latest sunset is at 8:32pm on June 25; the latest sunrise is at 5:34am on June 30; the earliest sunset is at 8:21pm on June 1.
Daylight savings time is observed in 2012 but it neither starts nor ends in June, so the entire month is in daylight time.
The median cloud cover is 64% (partly cloudy) and does not vary substantially over the course of the month.
On June 15, a representative day, the sky is clear or mostly clear 23% of the time, partly cloudy 33% of the time, and mostly cloudy or overcast 44% of the time.
The average probability that some form of precipitation will be observed in a given day is 46%, with little variation over the course of the month.
Throughout June, the most common forms of precipitation are thunderstorms and light rain.
Thunderstorms are the most severe precipitation observed during 78% of those days with precipitation. They are most likely around June 30, when it is observed during 39% of all days.
Light rain is the most severe precipitation observed during 12% of those days with precipitation. It is most likely around June 8, when it is observed during 7% of all days.
The likelihood of snow falling is highest around June 1, occurring in 3% of days.
Either snow rarely accumulates at this location in June or snow depth measurements are unavailable or unreliable.
The relative humidity typically ranges from 23% (dry) to 81% (humid) over the course of a typical June, rarely dropping below 11% (very dry) and reaching as high as 98% (very humid).
The air is driest around June 28, at which time the relative humidity drops below 29% (dry) three days out of four; it is most humid around June 1, rising above 71% (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 June, the dew point typically varies from 34°F (dry) to 53°F (very comfortable) and is rarely below 22°F (dry) or above 59°F (comfortable).
Over the course of June typical wind speeds vary from 1 mph to 20 mph (light air to fresh breeze), rarely exceeding 28 mph (strong breeze).
The highest average wind speed of 11 mph (gentle breeze) occurs around June 12, at which time the average daily maximum wind speed is 20 mph (fresh breeze).
The lowest average wind speed of 10 mph (gentle breeze) occurs around June 30, at which time the average daily maximum wind speed is 19 mph (fresh breeze).