S
M
T
W
T
F
S
27
74°
57°
28
80°
57°
29
83°
56°
30
83°
57°
1
81°
56°
2
82°
54°
3
80°
52°
4
80°
54°
5
79°
54°
6
79°
48°
7
69°
40°
8
67°
46°
9
70°
42°
10
70°
45°
11
72°
46°
12
71°
39°
13
65°
39°
14
66°
45°
15
71°
47°
16
69°
48°
17
68°
46°
18
73°
42°
19
66°
36°
20
63°
36°
21
63°
39°
22
65°
47°
23
71°
46°
24
73°
36°
25
65°
34°
26
61°
40°
27
62°
38°
28
60°
34°
29
58°
31°
30
57°
30°
31
57°
35°
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 57° to 83°, with overnight lows between 30° and 57°. 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.
