S
M
T
W
T
F
S
27
93°
56°
28
91°
57°
29
88°
56°
30
85°
54°
1
87°
52°
2
85°
52°
3
87°
51°
4
86°
50°
5
86°
49°
6
87°
50°
7
85°
49°
8
87°
55°
9
90°
56°
10
87°
54°
11
84°
54°
12
84°
46°
13
83°
43°
14
81°
44°
15
81°
45°
16
83°
47°
17
86°
49°
18
88°
50°
19
89°
51°
20
89°
52°
21
88°
52°
22
90°
50°
23
88°
52°
24
88°
50°
25
87°
42°
26
81°
45°
27
80°
44°
28
79°
42°
29
82°
47°
30
79°
45°
31
76°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Catalina
Catalina's October 2026 forecast shows daily high temperatures ranging from 76° to 93°, with overnight lows between 42° and 57°. The average high for October is 85° with an average low of 50°. 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 Catalina. See also: November | December | January.