S
M
T
W
T
F
S
31
76°
49°
1
78°
49°
2
80°
52°
3
77°
54°
4
66°
49°
5
68°
49°
6
65°
46°
7
68°
43°
8
69°
40°
9
74°
47°
10
79°
54°
11
81°
49°
12
82°
50°
13
72°
56°
14
84°
63°
15
84°
55°
16
83°
55°
17
83°
54°
18
86°
53°
19
87°
60°
20
86°
59°
21
80°
63°
22
73°
63°
23
74°
63°
24
76°
61°
25
74°
55°
26
79°
53°
27
85°
55°
28
83°
55°
29
84°
57°
30
83°
53°
1
78°
54°
2
80°
48°
3
87°
53°
4
86°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Brighton
Brighton's September 2025 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. 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.
