S
M
T
W
T
F
S
28
93°
62°
29
94°
65°
30
99°
68°
1
102°
69°
2
104°
72°
3
105°
75°
4
106°
73°
5
101°
70°
6
104°
75°
7
104°
74°
8
103°
74°
9
103°
72°
10
102°
69°
11
101°
70°
12
103°
72°
13
103°
74°
14
101°
74°
15
102°
72°
16
103°
73°
17
104°
74°
18
104°
75°
19
105°
76°
20
104°
76°
21
105°
75°
22
105°
76°
23
104°
76°
24
105°
75°
25
104°
76°
26
104°
76°
27
103°
75°
28
102°
71°
29
98°
70°
30
100°
72°
31
98°
70°
1
99°
72°
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 93° to 106°, with overnight lows between 62° and 76°. The average high for July is 102° with an average low of 73°. 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.