S
M
T
W
T
F
S
28
87°
70°
29
94°
71°
30
93°
69°
1
95°
70°
2
97°
70°
3
96°
69°
4
94°
67°
5
84°
66°
6
86°
67°
7
85°
65°
8
86°
64°
9
80°
63°
10
88°
68°
11
88°
68°
12
87°
67°
13
87°
67°
14
88°
68°
15
86°
67°
16
84°
68°
17
87°
68°
18
88°
67°
19
88°
68°
20
87°
68°
21
86°
69°
22
88°
68°
23
89°
69°
24
89°
68°
25
83°
67°
26
82°
68°
27
87°
68°
28
88°
69°
29
89°
68°
30
88°
68°
31
88°
67°
1
87°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Irvine
Irvine's July 2026 forecast shows daily high temperatures ranging from 80° to 97°, with overnight lows between 63° and 71°. The average high for July is 88° with an average low of 68°. 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 Irvine. See also: August | September | October.