S
M
T
W
T
F
S
26
104°
76°
27
106°
74°
28
106°
74°
29
101°
73°
30
103°
74°
31
103°
70°
1
102°
69°
2
101°
69°
3
100°
70°
4
101°
69°
5
100°
68°
6
100°
69°
7
101°
72°
8
103°
73°
9
105°
75°
10
105°
73°
11
104°
71°
12
102°
68°
13
100°
68°
14
99°
66°
15
98°
66°
16
98°
67°
17
99°
68°
18
99°
73°
19
100°
74°
20
104°
75°
21
104°
73°
22
103°
69°
23
104°
70°
24
103°
68°
25
99°
66°
26
97°
65°
27
96°
64°
28
96°
64°
29
95°
65°
30
96°
66°
31
98°
69°
1
101°
70°
2
101°
71°
3
100°
71°
4
101°
70°
5
101°
70°
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 95° to 106°, with overnight lows between 64° and 76°. The average high for August is 101° with an average low of 70°. 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.
