S
M
T
W
T
F
S
26
82°
68°
27
88°
63°
28
88°
68°
29
82°
63°
30
84°
57°
31
88°
59°
1
82°
70°
2
81°
68°
3
82°
64°
4
88°
63°
5
88°
68°
6
88°
64°
7
89°
71°
8
85°
70°
9
91°
71°
10
92°
72°
11
92°
71°
12
84°
66°
13
84°
65°
14
82°
67°
15
83°
64°
16
82°
61°
17
83°
60°
18
82°
63°
19
83°
63°
20
82°
62°
21
87°
65°
22
88°
66°
23
89°
67°
24
89°
66°
25
88°
66°
26
85°
65°
27
85°
65°
28
84°
64°
29
85°
63°
30
86°
64°
31
86°
63°
1
85°
62°
2
86°
60°
3
83°
59°
4
85°
62°
5
85°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Irvine
Irvine's August 2026 forecast shows daily high temperatures ranging from 82° to 92°, with overnight lows between 59° and 72°. The average high for August is 86° with an average low of 65°. 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 Irvine. See also: September | October | November.
