S
M
T
W
T
F
S
30
76°
65°
31
74°
64°
1
77°
63°
2
77°
61°
3
76°
60°
4
76°
62°
5
78°
63°
6
75°
60°
7
73°
59°
8
73°
60°
9
74°
52°
10
69°
57°
11
71°
57°
12
72°
56°
13
73°
57°
14
73°
58°
15
72°
57°
16
73°
56°
17
68°
56°
18
72°
55°
19
69°
56°
20
71°
56°
21
71°
55°
22
72°
56°
23
72°
54°
24
66°
53°
25
61°
51°
26
62°
50°
27
65°
51°
28
68°
52°
29
69°
52°
30
69°
51°
1
68°
52°
2
68°
52°
3
67°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Brighton
Brighton's September 2026 forecast shows daily high temperatures ranging from 61° to 78°, with overnight lows between 50° and 65°. The average high for September is 71° 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. See also: October | November | December.
