S
M
T
W
T
F
S
30
85°
60°
31
86°
58°
1
87°
59°
2
88°
62°
3
92°
54°
4
93°
61°
5
94°
64°
6
92°
59°
7
90°
62°
8
86°
59°
9
82°
55°
10
89°
50°
11
89°
62°
12
79°
50°
13
94°
55°
14
88°
67°
15
71°
55°
16
83°
54°
17
84°
61°
18
86°
58°
19
77°
54°
20
74°
49°
21
75°
51°
22
83°
51°
23
72°
55°
24
71°
57°
25
76°
51°
26
81°
54°
27
83°
54°
28
71°
59°
29
71°
54°
30
64°
53°
1
72°
46°
2
86°
51°
3
89°
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 72° to 89°, with overnight lows between 46° and 51°. The average high for September is 82° with an average low of 49°. 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.
