S
M
T
W
T
F
S
27
87°
63°
28
86°
69°
29
87°
72°
30
86°
74°
1
87°
76°
2
86°
75°
3
89°
76°
4
88°
74°
5
89°
73°
6
87°
73°
7
86°
74°
8
86°
72°
9
85°
73°
10
83°
72°
11
85°
70°
12
83°
73°
13
83°
72°
14
84°
72°
15
81°
70°
16
80°
72°
17
81°
71°
18
81°
71°
19
82°
69°
20
83°
68°
21
82°
69°
22
83°
70°
23
82°
70°
24
79°
69°
25
80°
70°
26
80°
70°
27
79°
69°
28
80°
70°
29
80°
70°
30
81°
69°
31
80°
69°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Sebastian
Sebastian's October 2026 forecast shows daily high temperatures ranging from 79° to 89°, with overnight lows between 68° and 76°. The average high for October is 83° with an average low of 71°. 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 Sebastian. See also: November | December | January.