S
M
T
W
T
F
S
30
79°
68°
31
82°
72°
1
84°
72°
2
85°
71°
3
85°
67°
4
84°
63°
5
77°
64°
6
77°
69°
7
80°
68°
8
81°
69°
9
82°
70°
10
77°
69°
11
82°
68°
12
82°
70°
13
81°
69°
14
81°
70°
15
83°
70°
16
83°
68°
17
81°
69°
18
80°
63°
19
80°
61°
20
75°
59°
21
72°
58°
22
72°
64°
23
74°
62°
24
78°
58°
25
71°
57°
26
72°
58°
27
71°
57°
28
76°
62°
29
75°
61°
30
77°
62°
1
74°
63°
2
74°
60°
3
75°
61°
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 71° to 85°, with overnight lows between 57° and 72°. The average high for September is 78° with an average low of 65°. 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.
