S
M
T
W
T
F
S
28
86°
70°
29
91°
70°
30
91°
72°
1
91°
70°
2
97°
70°
3
97°
69°
4
95°
72°
5
90°
71°
6
90°
71°
7
89°
67°
8
85°
67°
9
86°
66°
10
87°
67°
11
83°
64°
12
85°
66°
13
85°
67°
14
86°
65°
15
84°
64°
16
82°
62°
17
81°
61°
18
82°
62°
19
85°
67°
20
85°
67°
21
82°
66°
22
82°
67°
23
86°
68°
24
88°
68°
25
88°
67°
26
87°
68°
27
88°
68°
28
87°
67°
29
88°
68°
30
89°
68°
31
88°
67°
1
82°
66°
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 81° to 97°, with overnight lows between 61° and 72°. The average high for July is 87° 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 Irvine. See also: August | September | October.