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Average Weather in July at Jackson Hole Airport Wyoming, United States

At Jackson Hole Airport, the month of July is characterized by gradually rising daily high temperatures, with daily highs increasing by 4°F, from 76°F to 80°F over the course of the month, and rarely exceeding 87°F or dropping below 66°F. The highest daily average high temperature is 80°F on July 28.

Daily low temperatures increase by 2°F, from 42°F to 44°F, rarely falling below 35°F or exceeding 52°F. The highest daily average low temperature is 45°F on July 25.

For reference, on July 28, the hottest day of the year, temperatures at Jackson Hole Airport typically range from 44°F to 80°F, while on January 27, the coldest day of the year, they range from 6°F to 25°F.

Average High and Low Temperature in July

The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. The thin dotted lines are the corresponding average perceived temperatures.

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

Average Hourly Temperature in July at Jackson Hole Airport18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM4 AM8 AM12 PM4 PM8 PM12 AMJunAugcomfortablecoldcoolchillywarm
The average hourly temperature, color coded into bands: frigid < 15°F < freezing < 32°F < chilly < 45°F < cold < 55°F < cool < 65°F < comfortable < 75°F < warm < 85°F < hot < 95°F < sweltering. The shaded overlays indicate night and civil twilight.

Clouds

The month of July at Jackson Hole Airport experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 23% throughout the month. The lowest chance of overcast or mostly cloudy conditions is 22% on July 28.

The clearest day of the month is July 28, with clear, mostly clear, or partly cloudy conditions 78% of the time.

For reference, on March 18, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 58%, while on July 28, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 78%.

Cloud Cover Categories in July

Cloud Cover Categories in July at Jackson Hole Airport1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%JunAugMar 1842%Mar 1842%Jul 175%Jul 175%Jul 3178%Jul 3178%Jul 1176%Jul 1176%Jul 2178%Jul 2178%clearovercastmostly clearpartly cloudymostly cloudy
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds: clear < 20% < mostly clear < 40% < partly cloudy < 60% < mostly cloudy < 80% < overcast.

Precipitation

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. At Jackson Hole Airport, the chance of a wet day over the course of July is gradually increasing, starting the month at 14% and ending it at 17%.

For reference, the year's highest daily chance of a wet day is 32% on May 30, and its lowest chance is 14% on July 4.

Probability of Precipitation in July

The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed (both rain and snow fell in the same day).

Rainfall

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 Jackson Hole Airport is essentially constant, remaining about 0.8 inches throughout, and rarely exceeding 1.8 inches or falling below 0.1 inches.

The lowest average 31-day accumulation is 0.7 inches on July 14.

Average Monthly Rainfall in July

The average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average liquid-equivalent snowfall.

Sun

Over the course of July at Jackson Hole Airport, the length of the day is decreasing. From the start to the end of the month, the length of the day decreases by 47 minutes, implying an average daily decrease of 1 minute, 35 seconds, and weekly decrease of 11 minutes, 4 seconds.

The shortest day of the month is July 31, with 14 hours, 35 minutes of daylight and the longest day is July 1, with 15 hours, 22 minutes of daylight.

Hours of Daylight and Twilight in July

The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.

The earliest sunrise of the month at Jackson Hole Airport is 5:45 AM on July 1 and the latest sunrise is 26 minutes later at 6:11 AM on July 31.

The latest sunset is 9:08 PM on July 1 and the earliest sunset is 22 minutes earlier at 8:46 PM on July 31.

Daylight saving time is observed at Jackson Hole Airport during 2017, but it neither starts nor ends during July, so the entire month is in daylight saving time.

For reference, on June 21, the longest day of the year, the Sun rises at 5:41 AM and sets 15 hours, 26 minutes later, at 9:08 PM, while on December 21, the shortest day of the year, it rises at 7:53 AM and sets 8 hours, 56 minutes later, at 4:49 PM.

Sunrise & Sunset with Twilight in July

The solar day over the course of July. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray.

Humidity

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 Jackson Hole Airport is essentially constant during July, remaining around 0% throughout.

Humidity Comfort Levels in July

The percentage of time spent at various humidity comfort levels, categorized by dew point: dry < 55°F < comfortable < 60°F < humid < 65°F < muggy < 70°F < oppressive < 75°F < miserable.

Wind

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 Jackson Hole Airport is essentially constant during July, remaining within 0.1 miles per hour of 2.6 miles per hour throughout.

For reference, on March 30, the windiest day of the year, the daily average wind speed is 2.9 miles per hour, while on August 4, the calmest day of the year, the daily average wind speed is 2.5 miles per hour.

Average Wind Speed in July

The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.
The hourly average wind direction at Jackson Hole Airport throughout July is predominantly from the west, with a peak proportion of 47% on July 1.

Wind Direction in July

Wind Direction in July at Jackson Hole Airport1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%JunAugwestsoutheastnorth
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions (north, east, south, and west), excluding hours in which the mean wind speed is less than 1 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

Solar Energy

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 Jackson Hole Airport is gradually decreasing during July, falling by 0.7 kWh, from 8.2 kWh to 7.5 kWh, over the course of the month.

The highest average daily incident shortwave solar energy during July is 8.2 kWh on July 3.

Average Daily Incident Shortwave Solar Energy in July

Average Daily Incident Shortwave Solar Energy in July at Jackson Hole Airport1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310 kWh1 kWh2 kWh3 kWh4 kWh5 kWh6 kWh7 kWh8 kWh9 kWh10 kWhJunAugJul 38.2 kWhJul 38.2 kWhJul 317.5 kWhJul 317.5 kWhJul 217.8 kWhJul 217.8 kWh
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.

Topography

For the purposes of this report, the geographical coordinates of Jackson Hole Airport are 43.607 deg latitude, -110.739 deg longitude, and 6,424 ft elevation.

The topography within 2 miles of Jackson Hole Airport contains only modest variations in elevation, with a maximum elevation change of 259 feet and an average elevation above sea level of 6,426 feet. Within 10 miles contains only modest variations in elevation (7,500 feet). Within 50 miles also contains extreme variations in elevation (8,691 feet).

The area within 2 miles of Jackson Hole Airport is covered by shrubs (82%) and grassland (13%), within 10 miles by shrubs (54%) and trees (20%), and within 50 miles by trees (43%) and shrubs (39%).

Data Sources

This report illustrates the typical weather at Jackson Hole 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

Jackson Hole 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 include but are not limited to Driggs, Driggs-Reed Memorial Airport; West Yellowstone; Rexburg Airport; Big Piney-Marbleton Airport; Ralph Wenz Field; Fanning Field; Yellowstone Regional Airport; and Pocatello Regional Airport.

Other Data

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.