Barstow weather in August

In August, Barstow sees average daytime highs of 97°F and overnight lows near 71°F, with 0.1 in of rain across 0.6 wet days and about 13.3 hours of daylight. It is the 2nd-warmest and 10th-wettest month of the year here.

Highs ease over the month, from about 98°F in the first days to 96°F by the end. The sky is clear or mostly clear about 85% of the time in August, and the air most often feels dry.

Daylight stretches from about 13 h 48 min at the start of August to 12 h 48 min by month's end. Set against the rest of the year, August is Barstow's 3rd-clearest and 6th-windiest month. For the whole year in context, see Barstow's year-round climate.

Daytime high: 97°; 2nd warmest
Overnight low: 71°; 11th coldest
Rainfall: 0.1 in; 0.6 wet days
Daylight: 13 h 18 min; 5:13 AM – 6:32 PM
Cloud cover: 16%; 3rd clearest
Wind: 7 mph; 6th windiest
Solar energy: 7.49 kWh/m²
Travel score: 2.5; out of 10

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

Density: 221/km²; people per km²
Founded: 1947

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

← July Barstow year-round climate September →Best places to visit in August

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 98°F in the first days to 96°F by the end.

A typical August day in Barstow reaches about 97°F in the afternoon and slips back to 71°F overnight — a 26°F spread between the day's warmth and the night's chill. On most days the high lands between 92°F and 103°F. Set against its neighbours, August runs on par with July and about 7°F warmer than September.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Avg high (°F)	98	98	98	98	98	98	98	98	98	98	98	98	98	98	98	98	98	98	97	97	97	97	97	97	96	96	96	96	96	95	95
Avg low (°F)	72	72	72	72	72	72	72	71	71	71	71	71	71	71	71	71	71	71	71	71	71	71	71	70	70	70	70	70	70	69	69

	Avg high (°F)	Avg low (°F)
1	98	72
2	98	72
3	98	72
4	98	72
5	98	72
6	98	72
7	98	72
8	98	71
9	98	71
10	98	71
11	98	71
12	98	71
13	98	71
14	98	71
15	98	71
16	98	71
17	98	71
18	98	71
19	97	71
20	97	71
21	97	71
22	97	71
23	97	71
24	97	70
25	96	70
26	96	70
27	96	70
28	96	70
29	96	70
30	95	69
31	95	69

How August really feels in Barstow

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

heat index over the day's high

Days feeling ≤ 32°F

wind chill below the day's low

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

Barstow weather by month

How August compares with the rest of the year at a glance. August is the 2nd-warmest and 10th-wettest month here — the current month is highlighted below.

Month	High / Low (°F)	Rainfall (inches)	Wet days	Daylight (hours)	Travel score
Jan	58° / 38°	0.7	3.3	9.9	5.2
Feb	62° / 41°	0.9	3.7	10.7	6.3
Mar	68° / 46°	0.5	2.5	11.7	7.8
Apr	74° / 50°	0.3	1.5	12.9	8.7
May	83° / 57°	0.1	0.3	13.8	7.8
Jun	92° / 65°	0.0	0.2	14.3	4.4
Jul	98° / 72°	0.2	1.1	14.1	2.2
Aug	97° / 71°	0.1	0.6	13.3	2.5
Sep	90° / 64°	0.1	0.6	12.2	5.2
Oct	78° / 54°	0.2	1.1	11.1	8.7
Nov	65° / 43°	0.3	1.4	10.2	7.6
Dec	57° / 37°	0.6	2.5	9.7	4.9

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 85% 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%.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Clearer (%)	88	89	89	90	91	91	92	92	93	94	94	95	95	95	95	95	95	95	94	94	94	94	94	94	94	94	94	94	94	94	94
Cloudier (%)	12	11	11	10	9	9	8	8	7	6	6	5	5	5	5	5	5	5	6	6	6	6	6	6	6	6	6	6	6	6	6

	Clearer (%)	Cloudier (%)
1	88	12
2	89	11
3	89	11
4	90	10
5	91	9
6	91	9
7	92	8
8	92	8
9	93	7
10	94	6
11	94	6
12	95	5
13	95	5
14	95	5
15	95	5
16	95	5
17	95	5
18	95	5
19	94	6
20	94	6
21	94	6
22	94	6
23	94	6
24	94	6
25	94	6
26	94	6
27	94	6
28	94	6
29	94	6
30	94	6
31	94	6

Chance of precipitation in August

Any precipitation

Barstow gets around 0.1 in of rain over 0.6 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 2% and peaks near 3% on the wettest days.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Rain chance (%)	3	2	2	2	2	2	2	2	2	1	1	2	2	2	2	2	2	2	2	2	3	3	3	3	3	3	3	3	3	3	3

	Rain chance (%)
1	3
2	2
3	2
4	2
5	2
6	2
7	2
8	2
9	2
10	1
11	1
12	2
13	2
14	2
15	2
16	2
17	2
18	2
19	2
20	2
21	3
22	3
23	3
24	3
25	3
26	3
27	3
28	3
29	3
30	3
31	3

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 93% of days. It rarely turns muggy — the humid and sticky bands barely register.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Dry (%)	90	90	90	92	92	92	92	93	93	94	94	94	94	93	93	93	93	93	93	93	93	94	94	94	93	93	93	93	93	93	93
Comfortable (%)	7	7	7	6	6	6	6	6	6	5	5	5	5	6	6	6	6	6	6	6	6	5	5	5	5	5	5	5	5	5	5
Humid (%)	3	3	3	2	2	2	2	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	2	2	2	2	2	2	2

	Dry (%)	Comfortable (%)	Humid (%)
1	90	7	3
2	90	7	3
3	90	7	3
4	92	6	2
5	92	6	2
6	92	6	2
7	92	6	2
8	93	6	1
9	93	6	1
10	94	5	1
11	94	5	1
12	94	5	1
13	94	5	1
14	93	6	1
15	93	6	1
16	93	6	1
17	93	6	1
18	93	6	1
19	93	6	1
20	93	6	1
21	93	6	1
22	94	5	1
23	94	5	1
24	94	5	1
25	93	5	2
26	93	5	2
27	93	5	2
28	93	5	2
29	93	5	2
30	93	5	2
31	93	5	2

Wind in August

Winds average 7 mph in August.

Across August, daily wind ranges from about 7 mph on the calmest days to 8 mph at its breeziest. It stays fairly steady from day to day.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Wind speed (mph)	8	8	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7
Feels	light breeze	light breeze	light breeze	light breeze	light breeze	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm

	Wind speed (mph)	Feels
1	8	light breeze
2	8	light breeze
3	7	light breeze
4	7	light breeze
5	7	light breeze
6	7	calm
7	7	calm
8	7	calm
9	7	calm
10	7	calm
11	7	calm
12	7	calm
13	7	calm
14	7	calm
15	7	calm
16	7	calm
17	7	calm
18	7	calm
19	7	calm
20	7	calm
21	7	calm
22	7	calm
23	7	calm
24	7	calm
25	7	calm
26	7	calm
27	7	calm
28	7	calm
29	7	calm
30	7	calm
31	7	calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 13 h 48 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 60 minutes over August. Sunrise moves from 5:01 AM to 5:24 AM, and sunset from 6:47 PM to 6:12 PM.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Daylight (h)	13.8	13.7	13.7	13.7	13.7	13.6	13.6	13.6	13.5	13.5	13.5	13.4	13.4	13.4	13.4	13.3	13.3	13.3	13.2	13.2	13.2	13.1	13.1	13.1	13.0	13.0	12.9	12.9	12.9	12.8	12.8
Sunrise (AM)	5:01	5:02	5:03	5:03	5:04	5:05	5:06	5:06	5:07	5:08	5:09	5:09	5:10	5:11	5:12	5:13	5:13	5:14	5:15	5:16	5:16	5:17	5:18	5:19	5:19	5:20	5:21	5:22	5:22	5:23	5:24
Sunset (PM)	6:47	6:46	6:45	6:45	6:44	6:43	6:42	6:41	6:40	6:39	6:38	6:36	6:35	6:34	6:33	6:32	6:31	6:29	6:28	6:27	6:26	6:24	6:23	6:22	6:20	6:19	6:18	6:16	6:15	6:14	6:12

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	13.8	5:01	6:47
2	13.7	5:02	6:46
3	13.7	5:03	6:45
4	13.7	5:03	6:45
5	13.7	5:04	6:44
6	13.6	5:05	6:43
7	13.6	5:06	6:42
8	13.6	5:06	6:41
9	13.5	5:07	6:40
10	13.5	5:08	6:39
11	13.5	5:09	6:38
12	13.4	5:09	6:36
13	13.4	5:10	6:35
14	13.4	5:11	6:34
15	13.4	5:12	6:33
16	13.3	5:13	6:32
17	13.3	5:13	6:31
18	13.3	5:14	6:29
19	13.2	5:15	6:28
20	13.2	5:16	6:27
21	13.2	5:16	6:26
22	13.1	5:17	6:24
23	13.1	5:18	6:23
24	13.1	5:19	6:22
25	13.0	5:19	6:20
26	13.0	5:20	6:19
27	12.9	5:21	6:18
28	12.9	5:22	6:16
29	12.9	5:22	6:15
30	12.8	5:23	6:14
31	12.8	5:24	6:12

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 7.49 kWh/m².

For context, solar energy here swings from a low near 3.12 kWh/m² to a high of 8.65 kWh/m² in June across the year — August's 7.49 kWh/m² falls in the middle.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Solar energy (kWh/m²)	7.8	7.8	7.8	7.8	7.7	7.7	7.7	7.7	7.7	7.7	7.6	7.6	7.6	7.6	7.5	7.5	7.5	7.5	7.4	7.4	7.4	7.3	7.3	7.3	7.2	7.2	7.1	7.1	7.1	7.0	7.0
Level	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense

	Solar energy (kWh/m²)	Level
1	7.8	Intense
2	7.8	Intense
3	7.8	Intense
4	7.8	Intense
5	7.7	Intense
6	7.7	Intense
7	7.7	Intense
8	7.7	Intense
9	7.7	Intense
10	7.7	Intense
11	7.6	Intense
12	7.6	Intense
13	7.6	Intense
14	7.6	Intense
15	7.5	Intense
16	7.5	Intense
17	7.5	Intense
18	7.5	Intense
19	7.4	Intense
20	7.4	Intense
21	7.4	Intense
22	7.3	Intense
23	7.3	Intense
24	7.3	Intense
25	7.2	Intense
26	7.2	Intense
27	7.1	Intense
28	7.1	Intense
29	7.1	Intense
30	7.0	Intense
31	7.0	Intense

Planning a trip in August

Is August a good time to visit Barstow?

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

2.5

Sightseeing

11th-best month of the year

6.2

Beach & pool

6th-best month of the year

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

What to pack for Barstow in August

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

In August, Barstow sees daytime highs around 97°F and nights near 71°F. Pack light clothes and sun protection.

light clothessun protection

UV index in Barstow 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 Barstow 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.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	3	5	5	8	8	11	11	11	8	6	3	3
Level	Moderate	Moderate	High	Very high	Very high	Extreme	Extreme	Extreme	Very high	High	Moderate	Moderate

	UV index (midday)	Level
Jan	3	Moderate
Feb	5	Moderate
Mar	5	High
Apr	8	Very high
May	8	Very high
Jun	11	Extreme
Jul	11	Extreme
Aug	11	Extreme
Sep	8	Very high
Oct	6	High
Nov	3	Moderate
Dec	3	Moderate

Location & terrain

Where is Barstow?

Barstow sits at 34.9°N, 117.0°W, 2,175 ft above sea level, in United States. The nearest listed city is Barstow Heights, 2.5 mi away.

Topography around Barstow

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

Within 2 miles, the terrain around Barstow has only modest variations in elevation — a maximum elevation change of 525 ft around an average of 2,211 ft above sea level; within 10 miles, large variations in elevation — a maximum elevation change of 2,096 ft; within 50 miles, extreme variations in elevation — a maximum elevation change of 8,891 ft.

The land around Barstow is covered by bare terrain (55%) and artificial surfaces (35%) within 2 miles, bare terrain (91%) within 10 miles, and bare terrain (69%) within 50 miles.

2 miles

525 ft

bare terrain 55%

10 miles

2,096 ft

bare terrain 91%

50 miles

8,891 ft

bare terrain 69%

treesshrubsgrasslandcroplandartificial surfacesbare terrain

← July Barstow year-round climate September →Best places to visit in August

August weather nearby: Barstow Heights 2.5 mi · Apple Valley 29 mi · Victorville 29 mi · Adelanto 31 mi · Hesperia 36 mi · Highland 54 mi · San Bernardino 57 mi · Rialto 58 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

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 (34.8986°, -117.0228°, elevation 2,175 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).

	Avg high (°F)	Avg low (°F)
1	98	72
2	98	72
3	98	72
4	98	72
5	98	72
6	98	72
7	98	72
8	98	71
9	98	71
10	98	71
11	98	71
12	98	71
13	98	71
14	98	71
15	98	71
16	98	71
17	98	71
18	98	71
19	97	71
20	97	71
21	97	71
22	97	71
23	97	71
24	97	70
25	96	70
26	96	70
27	96	70
28	96	70
29	96	70
30	95	69
31	95	69

	Clearer (%)	Cloudier (%)
1	88	12
2	89	11
3	89	11
4	90	10
5	91	9
6	91	9
7	92	8
8	92	8
9	93	7
10	94	6
11	94	6
12	95	5
13	95	5
14	95	5
15	95	5
16	95	5
17	95	5
18	95	5
19	94	6
20	94	6
21	94	6
22	94	6
23	94	6
24	94	6
25	94	6
26	94	6
27	94	6
28	94	6
29	94	6
30	94	6
31	94	6

	Rain chance (%)
1	3
2	2
3	2
4	2
5	2
6	2
7	2
8	2
9	2
10	1
11	1
12	2
13	2
14	2
15	2
16	2
17	2
18	2
19	2
20	2
21	3
22	3
23	3
24	3
25	3
26	3
27	3
28	3
29	3
30	3
31	3

	Dry (%)	Comfortable (%)	Humid (%)
1	90	7	3
2	90	7	3
3	90	7	3
4	92	6	2
5	92	6	2
6	92	6	2
7	92	6	2
8	93	6	1
9	93	6	1
10	94	5	1
11	94	5	1
12	94	5	1
13	94	5	1
14	93	6	1
15	93	6	1
16	93	6	1
17	93	6	1
18	93	6	1
19	93	6	1
20	93	6	1
21	93	6	1
22	94	5	1
23	94	5	1
24	94	5	1
25	93	5	2
26	93	5	2
27	93	5	2
28	93	5	2
29	93	5	2
30	93	5	2
31	93	5	2

	Avg high (°F)	Avg low (°F)
1	98	72
2	98	72
3	98	72
4	98	72
5	98	72
6	98	72
7	98	72
8	98	71
9	98	71
10	98	71
11	98	71
12	98	71
13	98	71
14	98	71
15	98	71
16	98	71
17	98	71
18	98	71
19	97	71
20	97	71
21	97	71
22	97	71
23	97	71
24	97	70
25	96	70
26	96	70
27	96	70
28	96	70
29	96	70
30	95	69
31	95	69

	Clearer (%)	Cloudier (%)
1	88	12
2	89	11
3	89	11
4	90	10
5	91	9
6	91	9
7	92	8
8	92	8
9	93	7
10	94	6
11	94	6
12	95	5
13	95	5
14	95	5
15	95	5
16	95	5
17	95	5
18	95	5
19	94	6
20	94	6
21	94	6
22	94	6
23	94	6
24	94	6
25	94	6
26	94	6
27	94	6
28	94	6
29	94	6
30	94	6
31	94	6

	Rain chance (%)
1	3
2	2
3	2
4	2
5	2
6	2
7	2
8	2
9	2
10	1
11	1
12	2
13	2
14	2
15	2
16	2
17	2
18	2
19	2
20	2
21	3
22	3
23	3
24	3
25	3
26	3
27	3
28	3
29	3
30	3
31	3

	Dry (%)	Comfortable (%)	Humid (%)
1	90	7	3
2	90	7	3
3	90	7	3
4	92	6	2
5	92	6	2
6	92	6	2
7	92	6	2
8	93	6	1
9	93	6	1
10	94	5	1
11	94	5	1
12	94	5	1
13	94	5	1
14	93	6	1
15	93	6	1
16	93	6	1
17	93	6	1
18	93	6	1
19	93	6	1
20	93	6	1
21	93	6	1
22	94	5	1
23	94	5	1
24	94	5	1
25	93	5	2
26	93	5	2
27	93	5	2
28	93	5	2
29	93	5	2
30	93	5	2
31	93	5	2

	Avg high (°F)	Avg low (°F)
1	98	72
2	98	72
3	98	72
4	98	72
5	98	72
6	98	72
7	98	72
8	98	71
9	98	71
10	98	71
11	98	71
12	98	71
13	98	71
14	98	71
15	98	71
16	98	71
17	98	71
18	98	71
19	97	71
20	97	71
21	97	71
22	97	71
23	97	71
24	97	70
25	96	70
26	96	70
27	96	70
28	96	70
29	96	70
30	95	69
31	95	69

	Clearer (%)	Cloudier (%)
1	88	12
2	89	11
3	89	11
4	90	10
5	91	9
6	91	9
7	92	8
8	92	8
9	93	7
10	94	6
11	94	6
12	95	5
13	95	5
14	95	5
15	95	5
16	95	5
17	95	5
18	95	5
19	94	6
20	94	6
21	94	6
22	94	6
23	94	6
24	94	6
25	94	6
26	94	6
27	94	6
28	94	6
29	94	6
30	94	6
31	94	6

	Rain chance (%)
1	3
2	2
3	2
4	2
5	2
6	2
7	2
8	2
9	2
10	1
11	1
12	2
13	2
14	2
15	2
16	2
17	2
18	2
19	2
20	2
21	3
22	3
23	3
24	3
25	3
26	3
27	3
28	3
29	3
30	3
31	3

	Dry (%)	Comfortable (%)	Humid (%)
1	90	7	3
2	90	7	3
3	90	7	3
4	92	6	2
5	92	6	2
6	92	6	2
7	92	6	2
8	93	6	1
9	93	6	1
10	94	5	1
11	94	5	1
12	94	5	1
13	94	5	1
14	93	6	1
15	93	6	1
16	93	6	1
17	93	6	1
18	93	6	1
19	93	6	1
20	93	6	1
21	93	6	1
22	94	5	1
23	94	5	1
24	94	5	1
25	93	5	2
26	93	5	2
27	93	5	2
28	93	5	2
29	93	5	2
30	93	5	2
31	93	5	2