S
M
T
W
T
F
S
28
82°
48°
29
89°
67°
30
89°
70°
1
89°
68°
2
85°
67°
3
87°
67°
4
83°
62°
5
77°
54°
6
83°
52°
7
87°
57°
8
85°
60°
9
82°
59°
10
81°
56°
11
83°
58°
12
83°
56°
13
79°
57°
14
82°
56°
15
84°
57°
16
82°
58°
17
82°
56°
18
75°
58°
19
76°
60°
20
74°
53°
21
74°
53°
22
75°
54°
23
77°
59°
24
77°
59°
25
79°
60°
26
79°
59°
27
75°
58°
28
82°
61°
29
81°
61°
30
82°
60°
31
81°
61°
1
82°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Tustin
Tustin's July 2026 forecast shows daily high temperatures ranging from 74° to 87°, with overnight lows between 52° and 62°. The average high for July is 80° with an average low of 58°. 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 Tustin. See also: August | September | October.
