S
M
T
W
T
F
S
27
75°
60°
28
74°
59°
29
73°
57°
30
66°
53°
1
64°
53°
2
65°
57°
3
71°
57°
4
72°
56°
5
71°
56°
6
71°
55°
7
70°
56°
8
71°
56°
9
71°
55°
10
70°
54°
11
66°
54°
12
64°
48°
13
60°
45°
14
60°
46°
15
63°
47°
16
62°
42°
17
58°
49°
18
59°
53°
19
66°
50°
20
67°
50°
21
65°
48°
22
60°
49°
23
61°
49°
24
58°
50°
25
59°
50°
26
62°
49°
27
60°
44°
28
65°
39°
29
65°
40°
30
54°
44°
31
58°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Stonington
Stonington's October 2026 forecast shows daily high temperatures ranging from 54° to 75°, with overnight lows between 39° and 60°. The average high for October is 65° with an average low of 51°. 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 Stonington. See also: November | December | January.