S
M
T
W
T
F
S
26
90°
65°
27
84°
70°
28
82°
61°
29
77°
59°
30
83°
57°
31
89°
60°
1
90°
65°
2
89°
69°
3
82°
59°
4
83°
59°
5
82°
55°
6
88°
57°
7
92°
62°
8
88°
64°
9
84°
70°
10
86°
61°
11
82°
67°
12
72°
59°
13
71°
54°
14
68°
52°
15
73°
47°
16
79°
53°
17
85°
60°
18
82°
61°
19
86°
61°
20
89°
61°
21
85°
62°
22
82°
59°
23
80°
58°
24
82°
59°
25
75°
52°
26
76°
54°
27
77°
53°
28
69°
49°
29
64°
46°
30
67°
50°
31
68°
49°
1
72°
48°
2
74°
51°
3
74°
49°
4
72°
49°
5
69°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Brighton
Brighton's August 2026 forecast shows daily high temperatures ranging from 64° to 77°, with overnight lows between 46° and 54°. The average high for August is 71° with an average low of 50°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Brighton. See also: September | October | November.