S
M
T
W
T
F
S
26
100°
68°
27
97°
65°
28
99°
66°
29
99°
63°
30
98°
64°
31
95°
61°
1
93°
61°
2
94°
63°
3
97°
62°
4
98°
66°
5
97°
65°
6
97°
65°
7
96°
66°
8
97°
67°
9
98°
66°
10
98°
65°
11
97°
59°
12
93°
59°
13
92°
58°
14
91°
58°
15
91°
60°
16
92°
61°
17
95°
62°
18
97°
62°
19
97°
65°
20
98°
64°
21
97°
60°
22
97°
61°
23
96°
60°
24
91°
59°
25
90°
57°
26
89°
56°
27
89°
56°
28
90°
57°
29
90°
57°
30
91°
59°
31
93°
62°
1
96°
61°
2
97°
62°
3
96°
63°
4
96°
64°
5
95°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Barstow
Barstow's August 2026 forecast shows daily high temperatures ranging from 89° to 100°, with overnight lows between 56° and 68°. The average high for August is 95° with an average low of 62°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Barstow. See also: September | October | November.
