S
M
T
W
T
F
S
27
75°
43°
28
77°
41°
29
81°
45°
30
86°
52°
1
90°
70°
2
82°
58°
3
69°
56°
4
71°
47°
5
71°
45°
6
70°
44°
7
78°
48°
8
76°
47°
9
74°
46°
10
71°
47°
11
70°
47°
12
73°
43°
13
71°
44°
14
72°
43°
15
63°
38°
16
73°
48°
17
73°
47°
18
72°
47°
19
73°
42°
20
62°
38°
21
60°
35°
22
60°
35°
23
64°
41°
24
71°
42°
25
72°
45°
26
71°
39°
27
59°
33°
28
65°
34°
29
64°
37°
30
62°
34°
31
68°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Irvine
Irvine's October 2026 forecast shows daily high temperatures ranging from 59° to 90°, with overnight lows between 33° and 70°. The average high for October is 70° with an average low of 44°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how October weather will actually feel in Irvine. See also: November | December | January.
