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July Weather in Glendale Arizona, United States

Daily high temperatures are around 106°F, rarely falling below 99°F or exceeding 112°F. The highest daily average high temperature is 106°F on July 4.

Daily low temperatures increase by 2°F, from 81°F to 84°F, rarely falling below 75°F or exceeding 89°F. The highest daily average low temperature is 84°F on July 23.

For reference, on July 4, the hottest day of the year, temperatures in Glendale typically range from 82°F to 106°F, while on December 26, the coldest day of the year, they range from 44°F to 65°F.

Average High and Low Temperature in July in Glendale

Average High and Low Temperature in July in GlendaleJul112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313165°F65°F70°F70°F75°F75°F80°F80°F85°F85°F90°F90°F95°F95°F100°F100°F105°F105°F110°F110°F115°F115°FJunAugJul 4106°FJul 4106°F82°F82°FJul 31105°FJul 31105°F84°F84°FJul 21106°FJul 21106°F84°F84°F
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 in Glendale

Average Hourly Temperature in July in GlendaleJul112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMJunAugwarmhothothotswelteringcomfortablewarm
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The average hourly temperature, color coded into bands. The shaded overlays indicate night and civil twilight.

Ouargla, Algeria (6,361 miles away) is the far-away foreign place with temperatures most similar to Glendale (view comparison).

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The month of July in Glendale experiences rapidly increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 20% to 34%. The highest chance of overcast or mostly cloudy conditions is 34% on July 29.

The clearest day of the month is July 1, with clear, mostly clear, or partly cloudy conditions 80% of the time.

For reference, on February 19, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 38%, while on June 13, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 86%.

Cloud Cover Categories in July in Glendale

Cloud Cover Categories in July in GlendaleJul11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%JunAugJun 1386%Jun 1386%Jul 180%Jul 180%Jul 3166%Jul 3166%Jul 1174%Jul 1174%Jul 2167%Jul 2167%clearmostly clearpartly cloudymostly cloudyovercast
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Glendale, the chance of a wet day over the course of July is very rapidly increasing, starting the month at 7% and ending it at 18%.

For reference, the year's highest daily chance of a wet day is 19% on August 12, and its lowest chance is 0% on June 13.

Probability of Precipitation in July in Glendale

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 in Glendale is increasing, starting the month at 0.3 inches, when it rarely exceeds 0.9 inches, and ending the month at 0.9 inches, when it rarely exceeds 1.7 inches or falls below 0.2 inches.

Average Monthly Rainfall in July in Glendale

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 snowfall.

Over the course of July in Glendale, the length of the day is decreasing. From the start to the end of the month, the length of the day decreases by 32 minutes, implying an average daily decrease of 1 minute, 4 seconds, and weekly decrease of 7 minutes, 29 seconds.

The shortest day of the month is July 31, with 13 hours, 48 minutes of daylight and the longest day is July 1, with 14 hours, 20 minutes of daylight.

Hours of Daylight and Twilight in July in Glendale

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 in Glendale is 5:22 AM on July 1 and the latest sunrise is 18 minutes later at 5:40 AM on July 31.

The latest sunset is 7:42 PM on July 1 and the earliest sunset is 14 minutes earlier at 7:28 PM on July 31.

Daylight saving time is not observed in Glendale during 2024.

For reference, on June 20, the longest day of the year, the Sun rises at 5:19 AM and sets 14 hours, 23 minutes later, at 7:41 PM, while on December 21, the shortest day of the year, it rises at 7:29 AM and sets 9 hours, 56 minutes later, at 5:25 PM.

Sunrise & Sunset with Twilight in July in Glendale

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.

The figure below presents a compact representation of the sun's elevation (the angle of the sun above the horizon) and azimuth (its compass bearing) for every hour of every day in the reporting period. The horizontal axis is the day of the year and the vertical axis is the hour of the day. For a given day and hour of that day, the background color indicates the azimuth of the sun at that moment. The black isolines are contours of constant solar elevation.

Solar Elevation and Azimuth in July in Glendale

Solar Elevation and Azimuth in July in GlendaleJul112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMJunAug001010202020303040405050506060707000010102020303030404050506060607070
northeastsouthwest
Solar elevation and azimuth over the course of July 2024. The black lines are lines of constant solar elevation (the angle of the sun above the horizon, in degrees). The background color fills indicate the azimuth (the compass bearing) of the sun. The lightly tinted areas at the boundaries of the cardinal compass points indicate the implied intermediate directions (northeast, southeast, southwest, and northwest).

The figure below presents a compact representation of key lunar data for July 2024. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases. The label associated with each bar indicates the date and time that the phase is obtained, and the companion time labels indicate the rise and set times of the Moon for the nearest time interval in which the moon is above the horizon.

Moon Rise, Set & Phases in July in Glendale

Moon Rise, Set & Phases in July in GlendaleJul112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMJunAugJun 65:38 AMJun 65:38 AMJun 216:09 PMJun 216:09 PMJul 53:58 PMJul 53:58 PMJul 213:18 AMJul 213:18 AMAug 44:14 AMAug 44:14 AMAug 1911:26 AMAug 1911:26 AM5:04 AM5:04 AM8:23 PM8:23 PM7:59 PM7:59 PM5:35 AM5:35 AM4:47 AM4:47 AM8:05 PM8:05 PM7:36 PM7:36 PM5:34 AM5:34 AM5:44 AM5:44 AM7:59 PM7:59 PM6:54 PM6:54 PM5:37 AM5:37 AM
The time in which the moon is above the horizon (light blue area), with new moons (dark gray lines) and full moons (blue lines) indicated. The shaded overlays indicate night and civil twilight.
Jul 2024IlluminationMoonriseMoonsetMoonriseMeridian PassingDistance
1
21%1:34 AMENE3:52 PMWNW-8:39 AMS232,292 mi
2
12%2:12 AMENE5:02 PMWNW-9:33 AMS233,802 mi
3
6%2:56 AMENE6:09 PMNW-10:31 AMS235,635 mi
4
2%3:48 AMNE7:11 PMNW-11:29 AMS237,768 mi
5
0%4:47 AMNE8:05 PMWNW-12:27 PMS240,137 mi
6
1%5:49 AMENE8:50 PMWNW-1:23 PMS242,629 mi
7
4%6:53 AMENE9:27 PMWNW-2:14 PMS245,094 mi
8
9%7:55 AMENE9:59 PMWNW-3:00 PMS247,356 mi
9
15%8:55 AMENE10:26 PMWNW-3:43 PMS249,237 mi
10
23%9:52 AME10:50 PMW-4:23 PMS250,570 mi
11
32%10:47 AME11:14 PMW-5:02 PMS251,216 mi
12
41%11:42 AME11:37 PMW-5:41 PMS251,078 mi
13
50%12:37 PME--6:20 PMS250,114 mi
14
61%-12:02 AMWSW1:34 PMESE7:02 PMS248,347 mi
15
71%-12:29 AMWSW2:34 PMESE7:47 PMS245,865 mi
16
80%-1:00 AMWSW3:36 PMESE8:37 PMS242,827 mi
17
87%-1:38 AMWSW4:40 PMESE9:31 PMS239,454 mi
18
94%-2:23 AMWSW5:43 PMSE10:31 PMS236,015 mi
19
98%-3:19 AMSW6:43 PMSE11:33 PMS232,808 mi
20
99%-4:23 AMWSW7:36 PMESE--
21
100%-5:34 AMWSW8:21 PMESE12:35 AMS230,112 mi
22
99%-6:47 AMWSW9:00 PMESE1:34 AMS228,143 mi
23
95%-7:59 AMWSW9:34 PMESE2:30 AMS227,021 mi
24
88%-9:10 AMW10:04 PME3:21 AMS226,761 mi
25
79%-10:19 AMW10:34 PME4:10 AMS227,284 mi
26
68%-11:27 AMW11:04 PMENE4:58 AMS228,448 mi
27
50%-12:36 PMWNW11:36 PMENE5:46 AMS230,089 mi
28
45%-1:45 PMWNW-6:36 AMS232,044 mi
29
34%12:12 AMENE2:54 PMWNW-7:29 AMS234,184 mi
30
23%12:53 AMENE4:01 PMWNW-8:25 AMS236,413 mi
31
15%1:42 AMNE5:04 PMNW-9:22 AMS238,674 mi

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 in Glendale is rapidly increasing during July, rising from 7% to 22% over the course of the month.

For reference, on August 13, the muggiest day of the year, there are muggy conditions 23% of the time, while on November 13, the least muggy day of the year, there are muggy conditions 0% of the time.

Humidity Comfort Levels in July in Glendale

Humidity Comfort Levels in July in GlendaleJul11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%JunAugJul 17%Jul 17%Jul 3122%Jul 3122%Jul 1113%Jul 1113%Jul 2119%Jul 2119%muggymuggyhumidhumidcomfortablecomfortabledrydryoppressiveoppressive
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The percentage of time spent at various humidity comfort levels, categorized by dew point.

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 in Glendale is decreasing during July, decreasing from 7.1 miles per hour to 6.1 miles per hour over the course of the month.

For reference, on April 26, the windiest day of the year, the daily average wind speed is 7.7 miles per hour, while on August 15, the calmest day of the year, the daily average wind speed is 5.8 miles per hour.

Average Wind Speed in July in Glendale

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 in Glendale throughout July is predominantly from the west, with a peak proportion of 52% on July 5.

Wind Direction in July in Glendale

Wind Direction in July in GlendaleJul11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%20%80%40%60%60%40%80%20%100%0%JunAugwestsoutheastnorth
northeastsouthwest
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions, excluding hours in which the mean wind speed is less than 1.0 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).

Temperatures in Glendale are sufficiently warm year round that it is not entirely meaningful to discuss the growing season in these terms. We nevertheless include the chart below as an illustration of the distribution of temperatures experienced throughout the year.

Time Spent in Various Temperature Bands and the Growing Season in July in Glendale

Time Spent in Various Temperature Bands and the Growing Season in July in Glendalegrowing seasonJul11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%JunAug100%Jul 16100%Jul 16warmhotswelteringcomfortable
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The percentage of time spent in various temperature bands. The black line is the percentage chance that a given day is within the growing season.

Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F.

The average accumulated growing degree days in Glendale are very rapidly increasing during July, increasing by 1,057°F, from 3,440°F to 4,496°F, over the course of the month.

Growing Degree Days in July in Glendale

Growing Degree Days in July in GlendaleJul11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031313,200°F3,200°F3,400°F3,400°F3,600°F3,600°F3,800°F3,800°F4,000°F4,000°F4,200°F4,200°F4,400°F4,400°F4,600°F4,600°FJunAugJul 13,440°FJul 13,440°FJul 314,496°FJul 314,496°FJul 113,791°FJul 113,791°FJul 214,144°FJul 214,144°F
The average growing degree days accumulated over the course of July, with 25th to 75th and 10th to 90th percentile bands.

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 in Glendale is decreasing during July, falling by 1.0 kWh, from 8.1 kWh to 7.0 kWh, over the course of the month.

Average Daily Incident Shortwave Solar Energy in July in Glendale

Average Daily Incident Shortwave Solar Energy in July in GlendaleJul11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWhJunAugJul 18.1 kWhJul 18.1 kWhJul 317.0 kWhJul 317.0 kWhJul 117.7 kWhJul 117.7 kWhJul 217.2 kWhJul 217.2 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.

For the purposes of this report, the geographical coordinates of Glendale are 33.539 deg latitude, -112.186 deg longitude, and 1,152 ft elevation.

The topography within 2 miles of Glendale is essentially flat, with a maximum elevation change of 82 feet and an average elevation above sea level of 1,148 feet. Within 10 miles is essentially flat (1,542 feet). Within 50 miles contains very significant variations in elevation (6,952 feet).

The area within 2 miles of Glendale is covered by artificial surfaces (77%) and shrubs (23%), within 10 miles by artificial surfaces (59%) and shrubs (36%), and within 50 miles by shrubs (86%).

This report illustrates the typical weather in Glendale, 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

There are 3 weather stations near enough to contribute to our estimation of the temperature and dew point in Glendale.

For each station, the records are corrected for the elevation difference between that station and Glendale according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.

The estimated value at Glendale is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Glendale and a given station.

The stations contributing to this reconstruction are:

To get a sense of how much these sources agree with each other, you can view a comparison of Glendale and the stations that contribute to our estimates of its temperature history and climate. Please note that each source's contribution is adjusted for elevation and the relative change present in the MERRA-2 data.

Other Data

All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Algorithms 2nd Edition , 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 airports and weather stations are provided by AskGeo.com .

Maps are © OpenStreetMap contributors.

Disclaimer

The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.

We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.

We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader.

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