Average Weather in July at Grand Canyon National Park Airport Arizona, United States
At Grand Canyon National Park Airport, the month of July is characterized by essentially constant daily high temperatures, with daily highs around 84°F throughout the month, rarely exceeding 91°F or dropping below 76°F. The highest daily average high temperature is 85°F on July 5.
Daily low temperatures increase by 6°F, from 46°F to 52°F, rarely falling below 38°F or exceeding 58°F. The highest daily average low temperature is 52°F on July 30.
For reference, on July 4, the hottest day of the year, temperatures at Grand Canyon National Park Airport typically range from 47°F to 85°F, while on January 4, the coldest day of the year, they range from 16°F to 43°F.
Average High and Low Temperature in July
The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on July. The horizontal axis is the day, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.
Average Hourly Temperature in July
The month of July at Grand Canyon National Park Airport experiences increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 21% to 32%. The highest chance of overcast or mostly cloudy conditions is 32% on July 30.
The clearest day of the month is July 1, with clear, mostly clear, or partly cloudy conditions 79% of the time.
For reference, on February 19, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 41%, while on September 19, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 84%.
Cloud Cover in July
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. At Grand Canyon National Park Airport, the chance of a wet day over the course of July is very rapidly increasing, starting the month at 12% and ending it at 27%.
For reference, the year's highest daily chance of a wet day is 28% on August 4, and its lowest chance is 4% on June 15.
Probability of Precipitation in July
To show variation within the month and not just the monthly total, we show the rainfall accumulated over a sliding 31-day period centered around each day.
The average sliding 31-day rainfall during July at Grand Canyon National Park Airport is increasing, starting the month at 0.6 inches, when it rarely exceeds 1.2 inches or falls below 0.1 inches, and ending the month at 1.4 inches, when it rarely exceeds 2.2 inches or falls below 0.4 inches.
Average Monthly Rainfall in July
Over the course of July at Grand Canyon National Park Airport, the length of the day is decreasing. From the start to the end of the month, the length of the day decreases by 35 minutes, implying an average daily decrease of 1 minute, 10 seconds, and weekly decrease of 8 minutes, 10 seconds.
The shortest day of the month is July 31, with 13 hours, 58 minutes of daylight and the longest day is July 1, with 14 hours, 33 minutes of daylight.
Hours of Daylight and Twilight in July
The earliest sunrise of the month at Grand Canyon National Park Airport is 5:15 AM on July 1 and the latest sunrise is 20 minutes later at 5:35 AM on July 31.
The latest sunset is 7:49 PM on July 1 and the earliest sunset is 15 minutes earlier at 7:33 PM on July 31.
Daylight saving time is not observed at Grand Canyon National Park Airport during 2017.
For reference, on June 21, the longest day of the year, the Sun rises at 5:12 AM and sets 14 hours, 36 minutes later, at 7:48 PM, while on December 21, the shortest day of the year, it rises at 7:35 AM and sets 9 hours, 43 minutes later, at 5:18 PM.
Sunrise & Sunset with Twilight in July
We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.
The chance that a given day will be muggy at Grand Canyon National Park Airport is essentially constant during July, remaining around 0% throughout.
Humidity Comfort Levels in July
This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.
The average hourly wind speed at Grand Canyon National Park Airport is gradually decreasing during July, decreasing from 4.4 miles per hour to 3.4 miles per hour over the course of the month.
For reference, on April 10, the windiest day of the year, the daily average wind speed is 5.2 miles per hour, while on August 13, the calmest day of the year, the daily average wind speed is 3.3 miles per hour.
Average Wind Speed in July
Wind Direction in July
This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.
The average daily incident shortwave solar energy at Grand Canyon National Park Airport is decreasing during July, falling by 1.3 kWh, from 8.3 kWh to 6.9 kWh, over the course of the month.
Average Daily Incident Shortwave Solar Energy in July
For the purposes of this report, the geographical coordinates of Grand Canyon National Park Airport are 35.952 deg latitude, -112.147 deg longitude, and 6,611 ft elevation.
The topography within 2 miles of Grand Canyon National Park Airport contains only modest variations in elevation, with a maximum elevation change of 305 feet and an average elevation above sea level of 6,617 feet. Within 10 miles contains only modest variations in elevation (4,892 feet). Within 50 miles also contains extreme variations in elevation (10,850 feet).
The area within 2 miles of Grand Canyon National Park Airport is covered by trees (78%) and shrubs (22%), within 10 miles by trees (63%) and shrubs (35%), and within 50 miles by shrubs (73%) and trees (22%).
This report illustrates the typical weather at Grand Canyon National Park Airport year round, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.
Temperature and Dew Point
Grand Canyon National Park Airport has a weather station that reported reliably enough during the analysis period that we have included it in our network. When available, historical temperature and dew point measurements are taken directly from this weather station. These records are obtained from NOAA's Integrated Surface Hourly data set, falling back on ICAO METAR records as required.
In the case of missing or erroneous measurements from this station, we fall back on records from nearby stations, adjusted according to typical seasonal and diurnal intra-station differences. For a given day of the year and hour of the day, the fallback station is selected to minimize the prediction error over the years for which there are measurements for both stations.
The stations on which we may fall back are H.A. Clark Memorial Field, Flagstaff Pulliam Airport, Sedona Airport, Page Municipal Airport, Ernest A. Love Field, Winslow Municipal Airport, and Kingman Airport.
All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Tables of the Sun, Moon and Planets , by Jean Meeus.
All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid.
Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations.
Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory.
Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database .
Time zones for aiports and weather stations are provided by AskGeo.com .
Maps are © Esri, with data from National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, and iPC.