S
M
T
W
T
F
S
30
81°
62°
31
82°
63°
1
82°
63°
2
81°
62°
3
82°
55°
4
74°
54°
5
74°
57°
6
76°
62°
7
80°
62°
8
81°
61°
9
74°
56°
10
73°
61°
11
80°
60°
12
79°
61°
13
79°
61°
14
78°
60°
15
79°
60°
16
78°
59°
17
73°
58°
18
78°
52°
19
69°
50°
20
70°
49°
21
67°
48°
22
68°
52°
23
70°
51°
24
69°
48°
25
67°
48°
26
68°
55°
27
69°
54°
28
74°
55°
29
73°
54°
30
73°
54°
1
68°
52°
2
72°
52°
3
66°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Brighton Heights
Brighton Heights's September 2026 forecast shows daily high temperatures ranging from 66° to 82°, with overnight lows between 48° and 63°. The average high for September is 74° with an average low of 56°. 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 Brighton Heights. See also: October | November | December.