Adelanto weather in August

In August, Adelanto sees average daytime highs of 92°F and overnight lows near 67°F, with 0.3 in of rain across 2.6 wet days and about 13.3 hours of daylight. It is the 1st-warmest and 9th-wettest month of the year here.

Day-to-day highs hold fairly steady near 92°F through the month. The sky is clear or mostly clear about 84% 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 Adelanto's 3rd-clearest and 7th-windiest month. For the whole year in context, see Adelanto's year-round climate.

Daytime high
92°
1st warmest
Overnight low
67°
12th coldest
Rainfall
0.3 in
2.6 wet days
Daylight
13 h 18 min
5:15 AM – 6:33 PM
Cloud cover
17%
3rd clearest
Wind
5 mph
7th windiest
Solar energy
7.46 kWh/m²
Travel score
4.5
out of 10

Adelanto is city in San Bernardino County, California, United States.

Density
229/km²
people per km²
Founded
1915

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 92°F through the month.

A typical August day in Adelanto reaches about 92°F in the afternoon and slips back to 67°F overnight — a 25°F spread between the day's warmth and the night's chill. On most days the high lands between 85°F and 98°F. Set against its neighbours, August runs on par with July and about 6°F warmer than September.

60°70°80°90°100°151015202531
Avg high (°F)Avg low (°F)
19267
29267
39267
49267
59267
69267
79267
89267
99267
109267
119267
129267
139267
149267
159267
169267
179267
189267
199267
209167
219167
229167
239167
249167
259167
269166
279166
289166
299066
309066
319066

How August really feels in Adelanto

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.

Adelanto weather by month

How August compares with the rest of the year at a glance. August is the 1st-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan55° / 39°1.95.31.59.94.1
Feb57° / 40°2.361.910.74.6
Mar62° / 43°1.45.51.111.76.3
Apr69° / 47°0.73.40.612.87.8
May77° / 53°0.32.1013.88.7
Jun86° / 60°0.10.8014.36.8
Jul92° / 66°0.43.1014.14.4
Aug92° / 67°0.32.6013.34.5
Sep85° / 62°0.31.6012.26.8
Oct75° / 54°0.41.8011.18.8
Nov63° / 44°0.62.70.410.26.9
Dec54° / 38°1.54.319.74.0

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 84% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 9% of August, with mostly cloudy or overcast conditions the remaining 7%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
18911
29010
39010
4919
5919
6919
7928
8937
9937
10937
11946
12946
13946
14955
15955
16955
17955
18946
19946
20946
21946
22946
23946
24946
25937
26937
27937
28928
29928
30928
31928

Chance of precipitation in August

Any precipitation

Adelanto gets around 0.3 in of rain over 2.6 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 9% and peaks near 9% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
19
29
38
48
58
68
78
88
98
108
119
129
139
149
159
169
179
189
199
209
219
229
239
249
259
269
279
289
299
309
319

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 89% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
186113
286113
387103
487103
587103
68992
78992
88992
98992
108992
118992
128992
139091
1489101
1588102
1688102
1788102
1889101
1989101
2089101
2189101
2289101
239091
249091
258992
268992
2788102
2888102
2988102
3088102
3188102

Wind in August

Winds average 5 mph in August.

Across August, daily wind ranges from about 5 mph on the calmest days to 5 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (mph)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm
315calm

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 5:03 AM to 5:26 AM, and sunset from 6:48 PM to 6:14 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.75:036:48
213.75:046:47
313.75:056:46
413.75:056:46
513.65:066:45
613.65:076:44
713.65:086:43
813.65:086:42
913.55:096:41
1013.55:106:40
1113.55:116:39
1213.45:126:37
1313.45:126:36
1413.45:136:35
1513.35:146:34
1613.35:156:33
1713.35:156:32
1813.25:166:31
1913.25:176:29
2013.25:186:28
2113.15:186:27
2213.15:196:26
2313.15:206:24
2413.05:216:23
2513.05:216:22
2613.05:226:20
2712.95:236:19
2812.95:246:18
2912.95:246:16
3012.85:256:15
3112.85:266:14

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 7.46 kWh/m².

For context, solar energy here swings from a low near 3.07 kWh/m² to a high of 8.49 kWh/m² in June across the year — August's 7.46 kWh/m² falls in the middle.

02468151015202531
Solar energy (kWh/m²)Level
17.8Intense
27.8Intense
37.7Intense
47.7Intense
57.7Intense
67.7Intense
77.7Intense
87.7Intense
97.7Intense
107.6Intense
117.6Intense
127.6Intense
137.6Intense
147.5Intense
157.5Intense
167.5Intense
177.5Intense
187.4Intense
197.4Intense
207.3Intense
217.3Intense
227.3Intense
237.2Intense
247.2Intense
257.2Intense
267.1Intense
277.1Intense
287.0Intense
297.0Intense
307.0Intense
316.9Intense
Planning a trip in August

Is August a good time to visit Adelanto?

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

4.5
Sightseeing
9th-best month of the year
7.9
Beach & pool
3rd-best month of the year

August is a reasonable time to visit Adelanto for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Adelanto in August

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

In August, Adelanto sees daytime highs around 92°F and nights near 67°F. Pack light clothes and sun protection.

light clothessun protection

UV index in Adelanto 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 Adelanto peaks around June 23 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 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 15UV 3
UV index (midday)Level
Jan4Moderate
Feb5Moderate
Mar5High
Apr8Very high
May8Very high
Jun11Extreme
Jul11Extreme
Aug11Extreme
Sep8Very high
Oct6High
Nov3Moderate
Dec3Moderate

Air quality in Adelanto 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 Adelanto is worst in September — around 39 µg/m³ PM2.5 (poor), about 3.2× the cleanest month (May, 12 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateModerateSep 1537 µg/m³May 1612 µg/m³
PM2.5 (µg/m³)Level
Jan14Moderate
Feb15Moderate
Mar16Moderate
Apr14Moderate
May12Moderate
Jun15Moderate
Jul18Moderate
Aug22Moderate
Sep39Poor
Oct15Moderate
Nov17Moderate
Dec14Moderate
Location & terrain

Where is Adelanto?

Adelanto sits at 34.6°N, 117.4°W, 2,871 ft above sea level, in United States. The nearest listed city is Victorville, 7.5 mi away.

Topography around Adelanto

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

Within 2 miles, the terrain around Adelanto has only modest variations in elevation — a maximum elevation change of 157 ft around an average of 2,874 ft above sea level; within 10 miles, large variations in elevation — a maximum elevation change of 2,008 ft; within 50 miles, extreme variations in elevation — a maximum elevation change of 11,230 ft.

The land around Adelanto is covered by grassland (39%) and bare terrain (39%) within 2 miles, bare terrain (47%) and grassland (28%) within 10 miles, and bare terrain (39%), grassland (21%) and shrubs (20%) within 50 miles.

2 miles
157 ft
10 miles
2,008 ft
50 miles
11,230 ft
treesshrubsgrasslandcroplandartificial surfacesbare terrain
August weather nearby: Victorville 7.5 mi · Hesperia 12 mi · Apple Valley 14 mi · Barstow Heights 28 mi · Barstow 31 mi · Rialto 33 mi · Highland 34 mi · San Bernardino 34 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 Adelanto (34.5828°, -117.4092°, elevation 2,871 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).