S
M
T
W
T
F
S
26
84°
67°
27
84°
60°
28
82°
61°
29
84°
62°
30
86°
64°
31
87°
63°
1
85°
60°
2
83°
61°
3
83°
60°
4
82°
59°
5
83°
61°
6
83°
63°
7
84°
64°
8
84°
64°
9
82°
66°
10
83°
66°
11
82°
64°
12
83°
62°
13
88°
65°
14
89°
59°
15
83°
59°
16
82°
60°
17
87°
62°
18
87°
61°
19
83°
60°
20
82°
58°
21
83°
59°
22
83°
62°
23
82°
62°
24
81°
60°
25
81°
64°
26
83°
64°
27
87°
63°
28
88°
64°
29
88°
60°
30
87°
57°
31
80°
58°
1
82°
59°
2
85°
62°
3
85°
62°
4
84°
61°
5
83°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in West Irvine
West Irvine's August 2026 forecast shows daily high temperatures ranging from 80° to 89°, with overnight lows between 57° and 67°. The average high for August is 84° with an average low of 62°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in West Irvine. See also: September | October | November.