S
M
T
W
T
F
S
30
63°
48°
31
63°
48°
1
67°
49°
2
63°
48°
3
68°
49°
4
62°
48°
5
67°
50°
6
68°
52°
7
Hist. Avg.
60°
42°
8
Hist. Avg.
60°
43°
9
Hist. Avg.
60°
43°
10
Hist. Avg.
60°
43°
11
Hist. Avg.
61°
43°
12
Hist. Avg.
61°
43°
13
Hist. Avg.
61°
43°
14
Hist. Avg.
61°
43°
15
Hist. Avg.
61°
43°
16
Hist. Avg.
61°
43°
17
Hist. Avg.
61°
43°
18
Hist. Avg.
62°
43°
19
Hist. Avg.
62°
44°
20
Hist. Avg.
62°
44°
21
Hist. Avg.
62°
44°
22
Hist. Avg.
62°
44°
23
Hist. Avg.
62°
44°
24
Hist. Avg.
63°
44°
25
Hist. Avg.
63°
44°
26
Hist. Avg.
63°
45°
27
Hist. Avg.
63°
45°
28
Hist. Avg.
63°
45°
29
Hist. Avg.
63°
45°
30
Hist. Avg.
64°
45°
1
Hist. Avg.
64°
45°
2
Hist. Avg.
64°
45°
3
Hist. Avg.
64°
46°
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 68°, with overnight lows between 48° and 52°. The average high for September is 65° 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.
