S
M
T
W
T
F
S
28
89°
65°
29
90°
66°
30
91°
64°
1
93°
68°
2
95°
66°
3
96°
69°
4
98°
71°
5
98°
77°
6
102°
73°
7
102°
77°
8
106°
75°
9
108°
73°
10
108°
70°
11
107°
75°
12
105°
76°
13
99°
79°
14
101°
80°
15
105°
81°
16
106°
79°
17
102°
76°
18
99°
78°
19
101°
79°
20
102°
75°
21
104°
79°
22
115°
80°
23
108°
80°
24
101°
75°
25
104°
77°
26
107°
79°
27
108°
79°
28
107°
80°
29
108°
80°
30
108°
79°
31
107°
79°
1
107°
78°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Fort Irwin
Fort Irwin's July 2026 forecast shows daily high temperatures ranging from 99° to 115°, with overnight lows between 70° and 81°. The average high for July is 105° with an average low of 78°. 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 Fort Irwin. See also: August | September | October.