S
M
T
W
T
F
S
27
87°
68°
28
88°
67°
29
87°
65°
30
85°
61°
1
83°
62°
2
78°
60°
3
76°
57°
4
77°
57°
5
77°
58°
6
76°
61°
7
78°
60°
8
81°
63°
9
83°
60°
10
84°
58°
11
78°
57°
12
76°
54°
13
74°
55°
14
75°
57°
15
77°
61°
16
80°
62°
17
82°
62°
18
82°
61°
19
83°
63°
20
83°
63°
21
82°
65°
22
84°
62°
23
84°
60°
24
77°
58°
25
76°
59°
26
77°
61°
27
73°
60°
28
77°
61°
29
80°
59°
30
74°
54°
31
77°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Santa Ana
Santa Ana's October 2026 forecast shows daily high temperatures ranging from 73° to 88°, with overnight lows between 54° and 68°. The average high for October is 80° 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 Santa Ana. See also: November | December | January.
