S
M
T
W
T
F
S
30
90°
69°
31
89°
63°
1
85°
62°
2
82°
63°
3
83°
63°
4
84°
64°
5
85°
63°
6
81°
62°
7
81°
61°
8
82°
65°
9
82°
61°
10
80°
61°
11
81°
62°
12
82°
60°
13
81°
61°
14
80°
60°
15
79°
61°
16
80°
60°
17
79°
59°
18
78°
59°
19
79°
63°
20
77°
63°
21
82°
62°
22
Hist. Avg.
76°
57°
23
Hist. Avg.
75°
56°
24
Hist. Avg.
75°
56°
25
Hist. Avg.
75°
56°
26
Hist. Avg.
75°
55°
27
Hist. Avg.
74°
55°
28
Hist. Avg.
74°
55°
29
Hist. Avg.
74°
54°
30
Hist. Avg.
73°
54°
1
Hist. Avg.
73°
54°
2
Hist. Avg.
73°
53°
3
Hist. Avg.
72°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Capitol Heights
Capitol Heights's September 2026 forecast shows daily high temperatures ranging from 77° to 90°, with overnight lows between 59° and 69°. The average high for September is 82° with an average low of 62°. 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 Capitol Heights. See also: October | November | December.
