S
M
T
W
T
F
S
30
70°
61°
31
75°
57°
1
72°
54°
2
68°
61°
3
75°
64°
4
72°
55°
5
73°
52°
6
77°
54°
7
75°
57°
8
63°
52°
9
66°
50°
10
66°
52°
11
70°
55°
12
72°
52°
13
72°
64°
14
75°
63°
15
N/A
16
67°
55°
17
66°
50°
18
62°
59°
19
65°
56°
20
65°
51°
21
70°
56°
22
71°
57°
23
72°
59°
24
72°
56°
25
71°
54°
26
68°
56°
27
69°
54°
28
65°
54°
29
65°
53°
30
64°
51°
1
65°
49°
2
65°
53°
3
64°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Brighton
Brighton's September 2026 forecast shows daily high temperatures ranging from 62° to 72°, with overnight lows between 49° and 59°. The average high for September is 67° with an average low of 54°. 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. See also: October | November | December.
