Barstow Heights weather in July

In July, Barstow Heights sees average daytime highs of 96°F and overnight lows near 70°F, with 0.3 in of rain across 2 wet days and about 14.1 hours of daylight. It is the 1st-warmest and 7th-wettest month of the year here.

Day-to-day highs hold fairly steady near 96°F through the month. The sky is clear or mostly clear about 78% of the time in July, and the air most often feels dry.

Daylight stretches from about 14 h 18 min at the start of July to 13 h 48 min by month's end. Set against the rest of the year, July is Barstow Heights's 5th-clearest and 5th-windiest month. For the whole year in context, see Barstow Heights's year-round climate.

Daytime high
96°
1st warmest
Overnight low
70°
12th coldest
Rainfall
0.3 in
2 wet days
Daylight
14 h 06 min
4:50 AM – 6:58 PM
Cloud cover
22%
5th clearest
Wind
7 mph
5th windiest
Solar energy
8.02 kWh/m²
Travel score
2.7
out of 10

Barstow Heights is human settlement in San Bernardino County, California, United States of America.

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

Temperature in July

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 96°F through the month.

A typical July day in Barstow Heights reaches about 96°F in the afternoon and slips back to 70°F overnight — a 26°F spread between the day's warmth and the night's chill. On most days the high lands between 90°F and 103°F. Set against its neighbours, July runs about 6°F warmer than June and on par with August.

60°70°80°90°100°151015202531
Avg high (°F)Avg low (°F)
19568
29569
39669
49669
59669
69669
79669
89670
99670
109670
119670
129670
139670
149670
159670
169671
179771
189771
199771
209771
219771
229771
239771
249771
259771
269771
279771
289771
299771
309771
319771

How July really feels in Barstow Heights

Once humidity and wind are folded in, July 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 July is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Barstow Heights weather by month

How July compares with the rest of the year at a glance. July is the 1st-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysDaylight (hours)Travel score
Jan57° / 39°0.83.69.94.9
Feb60° / 41°1.03.910.75.8
Mar67° / 45°0.62.711.77.5
Apr73° / 49°0.41.812.98.6
May81° / 57°0.10.813.88.2
Jun91° / 64°0.10.414.34.9
Jul96° / 70°0.3214.12.7
Aug96° / 70°0.21.213.33.0
Sep89° / 64°0.1112.25.6
Oct77° / 54°0.2111.18.8
Nov65° / 44°0.31.510.27.4
Dec56° / 38°0.82.99.74.6

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 78% of the time in July.

Beyond those clear spells, partly cloudy skies cover about 10% of July, with mostly cloudy or overcast conditions the remaining 13%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
1928
2919
3919
4919
59010
69010
79010
89010
99010
108812
118812
128812
138812
148812
158713
168713
178713
188713
198614
208614
218515
228515
238515
248515
258515
268416
278515
288515
298614
308614
318614

Chance of precipitation in July

Any precipitation

Barstow Heights gets around 0.3 in of rain over 2 wet days in July. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 6% and peaks near 7% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
13
23
34
44
55
65
75
85
96
106
116
126
136
146
157
167
177
187
197
207
217
227
237
247
257
267
277
287
297
306
316

Humidity in July

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, July lands in the dry band about 88% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
195320
295320
394420
494420
592530
692530
791630
891630
991630
1090640
1189740
1289740
1388741
1488741
1587841
1687841
1787841
1887841
1987841
2086941
2186941
2286941
23841051
24841051
25841051
26831151
27831151
28831151
29841141
30851140
31851140

Wind in July

Winds average 7 mph in July.

Across July, daily wind ranges from about 6 mph on the calmest days to 7 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (mph)Feels
17light breeze
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

Sunrise & sunset in July

DaylightNight

Daylight runs from about 14 h 18 min at the start of July to 13 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 30 minutes over July. Sunrise moves from 4:42 AM to 5:00 AM, and sunset from 7:01 PM to 6:48 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.34:427:01
214.34:427:01
314.34:437:01
414.34:437:01
514.34:447:01
614.34:447:01
714.34:457:00
814.24:457:00
914.24:467:00
1014.24:467:00
1114.24:477:00
1214.24:486:59
1314.24:486:59
1414.24:496:59
1514.14:496:58
1614.14:506:58
1714.14:516:57
1814.14:516:57
1914.14:526:56
2014.14:536:56
2114.04:536:55
2214.04:546:55
2314.04:556:54
2414.04:556:53
2513.94:566:53
2613.94:576:52
2713.94:586:51
2813.94:586:51
2913.84:596:50
3013.85:006:49
3113.85:006:48

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 8.02 kWh/m².

For context, solar energy here swings from a low near 3.13 kWh/m² to a high of 8.62 kWh/m² in June across the year — July's 8.02 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
18.4Intense
28.4Intense
38.4Intense
48.3Intense
58.3Intense
68.3Intense
78.2Intense
88.2Intense
98.2Intense
108.2Intense
118.1Intense
128.1Intense
138.1Intense
148.1Intense
158.0Intense
168.0Intense
178.0Intense
188.0Intense
198.0Intense
208.0Intense
217.9Intense
227.9Intense
237.9Intense
247.9Intense
257.8Intense
267.8Intense
277.8Intense
287.8Intense
297.8Intense
307.8Intense
317.7Intense
Planning a trip in July

Is July a good time to visit Barstow Heights?

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

2.7
Sightseeing
12th-best month of the year
6.4
Beach & pool
6th-best month of the year

July is a weaker month for outdoor sightseeing in Barstow Heights. The water and warmth also suit a beach or pool day.

What to pack for Barstow Heights in July

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

In July, Barstow Heights sees daytime highs around 96°F and nights near 70°F. Pack light clothes and sun protection.

light clothessun protection

UV index in Barstow Heights in July

LowModerateHighVery highExtreme

Clear-sky midday UV in July 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 Barstow Heights peaks around June 23 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 17 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 17UV 3
UV index (midday)Level
Jan3Moderate
Feb5Moderate
Mar5High
Apr8Very high
May8Very high
Jun11Extreme
Jul11Extreme
Aug11Extreme
Sep8Very high
Oct6High
Nov3Moderate
Dec3Moderate

Air quality in Barstow Heights in July

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Barstow Heights is worst in September — around 30 µg/m³ PM2.5 (moderate), about 5.3× the cleanest month (December, 6 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1427 µg/m³Dec 146 µg/m³
PM2.5 (µg/m³)Level
Jan6Good
Feb7Good
Mar9Good
Apr9Good
May9Good
Jun16Moderate
Jul12Good
Aug15Moderate
Sep30Moderate
Oct7Good
Nov6Good
Dec6Good
Location & terrain

Where is Barstow Heights?

Barstow Heights sits at 34.9°N, 117.1°W, 2,559 ft above sea level, in United States. The nearest listed city is Barstow, 2.5 mi away.

Topography around Barstow Heights

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

Within 2 miles, the terrain around Barstow Heights has significant variations in elevation — a maximum elevation change of 948 ft around an average of 2,523 ft above sea level; within 10 miles, large variations in elevation — a maximum elevation change of 2,077 ft; within 50 miles, extreme variations in elevation — a maximum elevation change of 8,855 ft.

The land around Barstow Heights is covered by bare terrain (82%) within 2 miles, bare terrain (89%) within 10 miles, and bare terrain (67%) within 50 miles.

2 miles
948 ft
10 miles
2,077 ft
50 miles
8,855 ft
treesshrubsgrasslandcroplandartificial surfacesbare terrain
July weather nearby: Barstow 2.5 mi · Apple Valley 27 mi · Victorville 27 mi · Adelanto 28 mi · Hesperia 34 mi · Highland 52 mi · San Bernardino 54 mi · Rialto 56 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 Barstow Heights (34.8697°, -117.0562°, elevation 2,559 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).