S
M
T
W
T
F
S
26
83°
69°
27
81°
70°
28
80°
70°
29
81°
70°
30
83°
69°
31
84°
70°
1
82°
70°
2
83°
70°
3
82°
70°
4
79°
70°
5
80°
68°
6
82°
70°
7
83°
70°
8
86°
69°
9
89°
70°
10
83°
71°
11
84°
70°
12
82°
69°
13
79°
70°
14
79°
69°
15
79°
70°
16
81°
68°
17
85°
68°
18
84°
69°
19
85°
68°
20
84°
70°
21
85°
70°
22
87°
71°
23
93°
70°
24
89°
71°
25
88°
71°
26
91°
73°
27
93°
76°
28
90°
74°
29
88°
74°
30
82°
73°
31
80°
69°
1
79°
68°
2
79°
65°
3
78°
66°
4
78°
65°
5
85°
65°
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 ° to °, with overnight lows between ° and °. The average high for August is ° with an average low of °. 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.
