S
M
T
W
T
F
S
27
85°
68°
28
86°
68°
29
84°
73°
30
88°
74°
1
83°
74°
2
88°
77°
3
91°
79°
4
92°
77°
5
91°
76°
6
88°
77°
7
82°
75°
8
84°
78°
9
88°
79°
10
86°
80°
11
87°
80°
12
87°
78°
13
89°
70°
14
88°
72°
15
87°
69°
16
88°
68°
17
87°
70°
18
87°
70°
19
85°
71°
20
86°
69°
21
87°
68°
22
83°
71°
23
84°
71°
24
82°
70°
25
81°
71°
26
81°
70°
27
82°
70°
28
81°
68°
29
81°
70°
30
82°
70°
31
81°
69°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Sanibel
Sanibel's October 2026 forecast shows daily high temperatures ranging from 81° to 89°, with overnight lows between 68° and 80°. The average high for October is 85° with an average low of 72°. 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 Sanibel. See also: November | December | January.