S
M
T
W
T
F
S
26
81°
64°
27
83°
64°
28
78°
66°
29
74°
64°
30
78°
65°
31
85°
60°
1
85°
63°
2
79°
71°
3
77°
61°
4
82°
62°
5
88°
70°
6
85°
69°
7
82°
67°
8
85°
67°
9
83°
65°
10
81°
66°
11
79°
62°
12
76°
60°
13
74°
61°
14
77°
58°
15
76°
60°
16
76°
59°
17
77°
61°
18
76°
64°
19
80°
65°
20
76°
60°
21
75°
58°
22
76°
64°
23
82°
65°
24
79°
64°
25
76°
64°
26
78°
65°
27
80°
64°
28
80°
63°
29
78°
64°
30
77°
63°
31
79°
63°
1
78°
60°
2
72°
58°
3
72°
56°
4
73°
57°
5
74°
61°
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 72° to 88°, with overnight lows between 56° and 70°. The average high for August is 78° with an average low of 63°. 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.