S
M
T
W
T
F
S
26
78°
60°
27
79°
61°
28
78°
61°
29
79°
60°
30
78°
60°
31
72°
59°
1
72°
60°
2
73°
60°
3
72°
59°
4
72°
59°
5
73°
58°
6
72°
56°
7
72°
56°
8
73°
57°
9
73°
60°
10
71°
59°
11
72°
59°
12
72°
58°
13
73°
58°
14
72°
59°
15
71°
56°
16
70°
54°
17
70°
56°
18
71°
55°
19
71°
56°
20
72°
59°
21
72°
51°
22
69°
50°
23
68°
49°
24
69°
55°
25
70°
57°
26
74°
53°
27
71°
54°
28
70°
58°
29
74°
56°
30
78°
49°
31
68°
48°
1
69°
53°
2
72°
55°
3
67°
48°
4
68°
56°
5
75°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Stamford
Stamford's August 2026 forecast shows daily high temperatures ranging from 67° to 79°, with overnight lows between 48° and 61°. The average high for August is 72° with an average low of 56°. 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 Stamford. See also: September | October | November.