S
M
T
W
T
F
S
30
67°
48°
31
68°
57°
1
75°
57°
2
77°
51°
3
78°
55°
4
76°
48°
5
68°
49°
6
69°
53°
7
74°
56°
8
68°
52°
9
67°
54°
10
65°
56°
11
66°
54°
12
65°
52°
13
65°
51°
14
67°
53°
15
74°
54°
16
74°
48°
17
69°
47°
18
67°
47°
19
73°
52°
20
71°
54°
21
66°
47°
22
64°
49°
23
63°
47°
24
63°
45°
25
64°
46°
26
64°
45°
27
63°
53°
28
63°
52°
29
64°
50°
30
64°
51°
1
69°
53°
2
63°
50°
3
Hist. Avg.
63°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Cap Sante
Cap Sante's September 2026 forecast shows daily high temperatures ranging from 63° to 78°, with overnight lows between 45° and 57°. The average high for September is 68° 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 September weather will actually feel in Cap Sante. See also: October | November | December.