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
91°
56°
9
95°
63°
10
103°
62°
11
101°
69°
12
103°
71°
13
102°
70°
14
104°
71°
15
103°
67°
16
102°
67°
17
100°
66°
18
103°
70°
19
103°
68°
20
100°
69°
21
104°
68°
22
96°
63°
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 104°, with overnight lows between 62° and 71°. 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.