S
M
T
W
T
F
S
30
73°
64°
31
84°
66°
1
89°
69°
2
92°
71°
3
84°
67°
4
75°
66°
5
78°
58°
6
75°
55°
7
76°
53°
8
81°
56°
9
75°
68°
10
77°
56°
11
76°
50°
12
82°
59°
13
73°
51°
14
68°
46°
15
75°
58°
16
71°
62°
17
71°
57°
18
74°
57°
19
64°
60°
20
68°
54°
21
63°
54°
22
66°
55°
23
67°
56°
24
68°
52°
25
69°
52°
26
73°
54°
27
72°
54°
28
72°
53°
29
70°
46°
30
68°
53°
1
71°
52°
2
64°
50°
3
61°
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 74°, with overnight lows between 46° and 62°. The average high for September is 68° 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.
