Apache Junction weather in August

In August, Apache Junction sees average daytime highs of 99°F and overnight lows near 78°F, with 1.0 in of rain across 4.9 wet days and about 13.2 hours of daylight. It is the 2nd-warmest and 6th-wettest month of the year here.

Day-to-day highs hold fairly steady near 99°F through the month. The sky is clear or mostly clear about 63% of the time in August, and the air most often feels dry.

Daylight stretches from about 13 h 42 min at the start of August to 12 h 48 min by month's end. Set against the rest of the year, August is Apache Junction's 7th-clearest and 11th-windiest month. For the whole year in context, see Apache Junction's year-round climate.

Daytime high
99°
2nd warmest
Overnight low
78°
11th coldest
Rainfall
1.0 in
4.9 wet days
Daylight
13 h 12 min
5:53 AM – 7:08 PM
Cloud cover
35%
7th clearest
Wind
4 mph
11th windiest
Solar energy
6.76 kWh/m²
Travel score
1.5
out of 10

Apache Junction is city in Pinal and Maricopa counties in Arizona, United States.

Density
422/km²
people per km²
Founded
1978

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 99°F through the month.

A typical August day in Apache Junction reaches about 99°F in the afternoon and slips back to 78°F overnight — a 22°F spread between the day's warmth and the night's chill. On most days the high lands between 92°F and 106°F. Set against its neighbours, August runs about 2°F cooler than July and about 5°F warmer than September.

70°80°90°100°110°151015202531
Avg high (°F)Avg low (°F)
110079
210079
310079
410079
510079
610078
710078
810078
910078
1010078
1110078
1210078
1310078
1410078
1510078
1610078
1710078
189977
199977
209977
219977
229977
239977
249977
259976
269876
279876
289876
299876
309876
319875

How August really feels in Apache Junction

Once humidity and wind are folded in, August averages 31 days that feel above 90°F and 0 that feel at or below 32°F — the comfort signal a plain temperature reading hides.

Days feeling ≥ 90°F
31
heat index over the day's high
Days feeling ≤ 32°F
0
wind chill below the day's low

The story in August is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Apache Junction weather by month

How August compares with the rest of the year at a glance. August is the 2nd-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysDaylight (hours)Travel score
Jan63° / 39°1.94.4106.8
Feb66° / 42°2.14.810.87.1
Mar73° / 47°1.43.411.78.2
Apr80° / 53°0.51.612.88.2
May89° / 62°0.20.913.75.3
Jun99° / 71°0.10.714.21.9
Jul101° / 78°0.84.3141.0
Aug99° / 78°1.04.913.21.5
Sep95° / 71°1.13.612.23.3
Oct84° / 58°0.92.911.27.0
Nov72° / 47°1.02.810.38.3
Dec63° / 40°1.74.89.86.5

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 63% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 19% of August, with mostly cloudy or overcast conditions the remaining 18%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17525
27525
37525
47624
57723
67723
77921
87921
98020
108020
118218
128218
138218
148317
158317
168416
178416
188416
198416
208515
218515
228515
238515
248515
258515
268515
278416
288515
298515
308515
318515

Chance of precipitation in August

Any precipitation

Apache Junction gets around 1.0 in of rain over 4.9 wet days in August. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 16% and peaks near 18% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
117
217
317
417
517
616
716
816
915
1015
1115
1214
1314
1414
1514
1614
1714
1814
1914
2015
2115
2215
2316
2416
2516
2617
2717
2817
2917
3018
3118

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

Most of August feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, August lands in the dry band about 35% of days. Sticky, muggy-or-worse air turns up on roughly 12% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1362723141
2352723141
3352724131
4352824131
5352824121
6342825121
7352925111
8342925101
934302591
1034302691
1134312681
1234312681
1334312681
1434322681
1534322581
1634322581
1733322581
1833322491
1934322492
20343124102
21343123101
22343123111
23343122111
24353022121
25353022121
26353022121
27363021121
28372921121
29372921121
30382920121
31392920121

Wind in August

Winds average 4 mph in August.

Across August, daily wind ranges from about 4 mph on the calmest days to 4 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (mph)Feels
14calm
24calm
34calm
44calm
54calm
64calm
74calm
84calm
94calm
104calm
114calm
124calm
134calm
144calm
154calm
164calm
174calm
184calm
194calm
204calm
214calm
224calm
234calm
244calm
254calm
264calm
274calm
284calm
294calm
304calm
314calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 13 h 42 min at the start of August to 12 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 54 minutes over August. Sunrise moves from 5:42 AM to 6:03 AM, and sunset from 7:22 PM to 6:49 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.75:427:22
213.65:437:22
313.65:437:21
413.65:447:20
513.65:457:19
613.55:467:18
713.55:467:17
813.55:477:16
913.55:487:15
1013.45:497:14
1113.45:497:13
1213.45:507:12
1313.35:517:11
1413.35:517:10
1513.35:527:09
1613.25:537:08
1713.25:547:07
1813.25:547:05
1913.25:557:04
2013.15:567:03
2113.15:567:02
2213.15:577:01
2313.05:586:59
2413.05:596:58
2513.05:596:57
2612.96:006:56
2712.96:016:54
2812.96:016:53
2912.86:026:52
3012.86:036:50
3112.86:036:49

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 6.76 kWh/m².

For context, solar energy here swings from a low near 3.14 kWh/m² to a high of 8.44 kWh/m² in June across the year — August's 6.76 kWh/m² falls in the middle.

02468151015202531
Solar energy (kWh/m²)Level
17.0Intense
27.0Intense
37.0Intense
47.0Intense
57.0Intense
67.0Intense
76.9Intense
86.9Intense
96.9Intense
106.9Intense
116.9Intense
126.9Intense
136.9Intense
146.8Intense
156.8Intense
166.8Intense
176.8Intense
186.8Intense
196.7Intense
206.7Intense
216.7Intense
226.6Intense
236.6Intense
246.6Intense
256.5Intense
266.5Intense
276.5Intense
286.5Intense
296.4Intense
306.4Intense
316.4Intense
Planning a trip in August

Is August a good time to visit Apache Junction?

Our two travel scores rate August for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

1.5
Sightseeing
11th-best month of the year
4.7
Beach & pool
8th-best month of the year

August is a weaker month for outdoor sightseeing in Apache Junction.

What to pack for Apache Junction in August

From August's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In August, Apache Junction sees daytime highs around 99°F and nights near 78°F. Pack light clothes and sun protection. About 5 days see rain.

light clothessun protection

UV index in Apache Junction in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Apache Junction peaks around June 23 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 11 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highHighModerateJun 23UV 11Dec 20UV 3
UV index (midday)Level
Jan4Moderate
Feb5Moderate
Mar5Moderate
Apr7High
May9Very high
Jun11Extreme
Jul11Extreme
Aug11Extreme
Sep9Very high
Oct6High
Nov4Moderate
Dec3Moderate

Air quality in Apache Junction in August

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where August falls, not just the annual average.

Air quality in Apache Junction is worst in June — around 32 µg/m³ PM2.5 (moderate), about 2.8× the cleanest month (December, 11 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateGoodJun 1730 µg/m³Dec 1211 µg/m³
PM2.5 (µg/m³)Level
Jan12Moderate
Feb12Good
Mar12Good
Apr12Good
May13Moderate
Jun32Moderate
Jul15Moderate
Aug13Moderate
Sep13Moderate
Oct13Moderate
Nov12Good
Dec11Good
Location & terrain

Where is Apache Junction?

Apache Junction sits at 33.4°N, 111.5°W, 1,722 ft above sea level, in United States. The nearest listed city is Queen Creek, 12 mi away.

Topography around Apache Junction

How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Apache Junction.

Within 2 miles, the terrain around Apache Junction has only modest variations in elevation — a maximum elevation change of 243 ft around an average of 1,716 ft above sea level; within 10 miles, large variations in elevation — a maximum elevation change of 3,655 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 7,270 ft.

The land around Apache Junction is covered by artificial surfaces (57%) and shrubs (20%) within 2 miles, shrubs (51%) and artificial surfaces (22%) within 10 miles, and shrubs (54%) within 50 miles.

2 miles
243 ft
10 miles
3,655 ft
50 miles
7,270 ft
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
August weather nearby: Queen Creek 12 mi · Gilbert 14 mi · San Tan Valley 16 mi · Mesa 16 mi · Fountain Hills 17 mi · Chandler 19 mi · Tempe 21 mi · Scottsdale 21 mi

United States travel facts

Power plugs
Type A / B
120 V · 60 Hz
Prices
≈ 100% of US
price level, 2025
GDP per capita
$90,027
2025
Happiness
6.8 / 10
World Happiness, 2025
Safe drinking water
98%
of population, 2024
Homicide rate
5.8
per 100k, 2023
Road deaths
12.7
per 100k/yr, 2019
Income group
High
World Bank
Religion
Protestant 47%unaffiliated 23%Roman Catholic 21%Jewish 2%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Apache Junction (33.4151°, -111.5496°, elevation 1,722 ft), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).