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