S
M
T
W
T
F
S
26
77°
61°
27
78°
62°
28
75°
64°
29
73°
64°
30
N/A
31
79°
66°
1
81°
69°
2
72°
67°
3
77°
62°
4
79°
65°
5
78°
66°
6
79°
62°
7
80°
63°
8
78°
65°
9
77°
62°
10
78°
63°
11
77°
62°
12
76°
59°
13
79°
63°
14
80°
61°
15
72°
58°
16
71°
56°
17
72°
62°
18
72°
59°
19
71°
58°
20
71°
57°
21
72°
56°
22
71°
56°
23
70°
53°
24
69°
54°
25
70°
54°
26
71°
56°
27
70°
55°
28
69°
52°
29
68°
52°
30
69°
55°
31
75°
60°
1
70°
61°
2
73°
59°
3
70°
55°
4
68°
52°
5
68°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Cape Vincent
Cape Vincent's August 2026 forecast shows daily high temperatures ranging from 68° to 81°, with overnight lows between 52° and 69°. The average high for August is 74° with an average low of 59°. 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 Cape Vincent. See also: September | October | November.