S
M
T
W
T
F
S
30
69°
55°
31
75°
60°
1
70°
61°
2
73°
59°
3
70°
55°
4
68°
52°
5
68°
52°
6
69°
58°
7
70°
57°
8
69°
54°
9
66°
51°
10
66°
49°
11
66°
44°
12
62°
48°
13
65°
49°
14
64°
48°
15
63°
47°
16
64°
46°
17
64°
45°
18
63°
46°
19
61°
46°
20
61°
44°
21
62°
45°
22
63°
51°
23
67°
49°
24
67°
49°
25
69°
53°
26
71°
53°
27
70°
46°
28
66°
47°
29
60°
42°
30
60°
44°
1
58°
50°
2
68°
50°
3
69°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Cape Vincent
Cape Vincent's September 2026 forecast shows daily high temperatures ranging from 58° to 75°, with overnight lows between 39° and 61°. The average high for September is 66° with an average low of 50°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Cape Vincent. See also: October | November | December.
