S
M
T
W
T
F
S
26
71°
59°
27
74°
63°
28
72°
62°
29
75°
61°
30
76°
64°
31
77°
62°
1
78°
56°
2
76°
56°
3
72°
57°
4
71°
56°
5
71°
55°
6
70°
55°
7
72°
57°
8
74°
60°
9
73°
61°
10
75°
61°
11
74°
60°
12
77°
61°
13
74°
61°
14
74°
60°
15
79°
55°
16
72°
59°
17
72°
53°
18
73°
53°
19
70°
54°
20
70°
54°
21
71°
57°
22
70°
56°
23
70°
54°
24
72°
59°
25
72°
55°
26
76°
59°
27
72°
56°
28
75°
53°
29
70°
53°
30
66°
52°
31
67°
52°
1
68°
51°
2
68°
50°
3
69°
56°
4
67°
54°
5
70°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Stonington
Stonington's August 2026 forecast shows daily high temperatures ranging from 66° to 79°, with overnight lows between 50° and 64°. The average high for August is 72° with an average low of 57°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Stonington. See also: September | October | November.
