S
M
T
W
T
F
S
30
86°
70°
31
84°
74°
1
93°
75°
2
83°
73°
3
90°
74°
4
88°
72°
5
80°
71°
6
80°
69°
7
80°
67°
8
82°
64°
9
87°
70°
10
88°
74°
11
79°
70°
12
80°
71°
13
84°
74°
14
79°
69°
15
76°
64°
16
79°
63°
17
83°
71°
18
83°
73°
19
79°
69°
20
82°
69°
21
72°
64°
22
68°
61°
23
66°
60°
24
65°
57°
25
68°
59°
26
69°
58°
27
69°
57°
28
68°
57°
29
69°
58°
30
73°
59°
1
72°
59°
2
69°
58°
3
69°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Cape St. Claire
Cape St. Claire's September 2026 forecast shows daily high temperatures ranging from 65° to 82°, with overnight lows between 57° and 69°. The average high for September is 70° with an average low of 60°. 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 St. Claire. See also: October | November | December.
