S
M
T
W
T
F
S
28
85°
52°
29
88°
55°
30
92°
58°
1
87°
55°
2
89°
55°
3
94°
57°
4
96°
59°
5
93°
68°
6
93°
60°
7
92°
58°
8
94°
58°
9
100°
64°
10
104°
64°
11
104°
69°
12
101°
72°
13
101°
70°
14
104°
71°
15
105°
69°
16
104°
68°
17
103°
70°
18
102°
67°
19
99°
68°
20
100°
67°
21
96°
63°
22
100°
68°
23
100°
69°
24
94°
65°
25
96°
67°
26
98°
67°
27
98°
66°
28
99°
68°
29
99°
68°
30
98°
67°
31
100°
68°
1
99°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Barstow
Barstow's July 2026 forecast shows daily high temperatures ranging from 94° to 105°, with overnight lows between 58° and 72°. The average high for July is 100° with an average low of 67°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in Barstow. See also: August | September | October.