S
M
T
W
T
F
S
27
81°
65°
28
82°
66°
29
79°
64°
30
76°
64°
1
74°
62°
2
76°
63°
3
77°
66°
4
81°
66°
5
81°
65°
6
80°
65°
7
78°
64°
8
74°
64°
9
76°
63°
10
76°
64°
11
73°
61°
12
72°
61°
13
77°
63°
14
78°
62°
15
76°
63°
16
74°
62°
17
79°
63°
18
79°
62°
19
72°
58°
20
71°
54°
21
71°
54°
22
72°
55°
23
72°
55°
24
71°
56°
25
71°
53°
26
72°
54°
27
72°
54°
28
73°
56°
29
73°
55°
30
72°
56°
31
70°
59°
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 70° to 82°, with overnight lows between 53° and 66°. The average high for October is 75° with an average low of 60°. 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.
