S
M
T
W
T
F
S
27
86°
71°
28
79°
68°
29
81°
64°
30
77°
67°
1
82°
67°
2
100°
67°
3
102°
72°
4
100°
76°
5
104°
73°
6
99°
72°
7
96°
70°
8
91°
69°
9
91°
70°
10
88°
68°
11
80°
65°
12
78°
62°
13
83°
63°
14
83°
63°
15
84°
64°
16
87°
65°
17
86°
64°
18
79°
59°
19
82°
63°
20
82°
63°
21
81°
62°
22
82°
62°
23
82°
61°
24
81°
62°
25
82°
62°
26
81°
61°
27
77°
56°
28
72°
54°
29
72°
53°
30
73°
54°
31
73°
53°
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 72° to 104°, with overnight lows between 53° and 73°. The average high for October is 83° with an average low of 63°. 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.
