This report describes the typical weather at the Grand Canyon National Park Airport (Grand Canyon National Park, Arizona, United States) weather station over the course of an average June. It is based on the historical records from 1981 to 2012. Earlier records are either unavailable or unreliable.
Grand Canyon National Park, Arizona has a continental climate with dry warm summers. The area within 25 mi of this station is covered by shrublands (65%), grasslands (19%), and forests (16%).
The month of June is characterized by rapidly rising daily high temperatures, with daily highs increasing from 75°F to 84°F over the course of the month, exceeding 91°F or dropping below 65°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 14:26 hours of daylight; the longest day is June 21 with 14:36 hours of daylight.
The earliest sunrise is at 5:11am on June 11; the latest sunset is at 7:50pm on June 29; the latest sunrise is at 5:15am on June 30; the earliest sunset is at 7:40pm on June 1.
Daylight saving time (DST) is not observed in 2012.
The median cloud cover ranges from 9% (clear) to 14% (mostly clear).
On June 15, a representative day, the sky is clear or mostly clear 49% of the time, partly cloudy 11% of the time, and mostly cloudy or overcast 14% of the time.
The probability that precipitation will be observed at this location varies throughout the month. Precipitation is most likely around June 30, occurring in 23% of days. Precipitation is least likely around June 1, occurring in 14% of days.
Throughout June, the most common forms of precipitation are thunderstorms and light rain.
Thunderstorms are the most severe precipitation observed during 63% of those days with precipitation. They are most likely around June 30, when it is observed during 16% of all days.
Light rain is the most severe precipitation observed during 30% of those days with precipitation. It is most likely around June 30, when it is observed during 6% of all days.
Either snow is exceptionally unlikely to fall at this location in June or this station does not reliably report precipitation types.
The relative humidity typically ranges from 18% (dry) to 82% (humid) over the course of a typical June, rarely dropping below 8% (very dry) and reaching as high as 100% (very humid).
The air is driest around June 24, at which time the relative humidity drops below 19% (dry) three days out of four; it is most humid around June 2, rising above 63% (mildly 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 21°F (dry) to 40°F (dry) and is rarely below 7°F (dry) or above 53°F (very comfortable).
Over the course of June typical wind speeds vary from 0 mph to 17 mph (calm to moderate breeze), rarely exceeding 24 mph (strong breeze).
The highest average wind speed of 7 mph (light breeze) occurs around June 12, at which time the average daily maximum wind speed is 17 mph (moderate breeze).
The lowest average wind speed of 6 mph (light breeze) occurs around June 30, at which time the average daily maximum wind speed is 16 mph (moderate breeze).