S
M
T
W
T
F
S
26
81°
66°
27
84°
68°
28
87°
68°
29
87°
67°
30
86°
68°
31
83°
68°
1
82°
67°
2
83°
68°
3
84°
68°
4
83°
67°
5
84°
67°
6
81°
66°
7
82°
67°
8
86°
63°
9
80°
60°
10
79°
60°
11
80°
66°
12
80°
64°
13
80°
65°
14
80°
67°
15
80°
66°
16
82°
66°
17
83°
60°
18
80°
58°
19
81°
63°
20
80°
64°
21
79°
62°
22
83°
59°
23
84°
61°
24
80°
59°
25
78°
57°
26
78°
58°
27
79°
58°
28
76°
56°
29
78°
57°
30
79°
63°
31
82°
63°
1
84°
64°
2
84°
63°
3
83°
56°
4
82°
55°
5
75°
56°
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 75° to 87°, with overnight lows between 55° and 68°. The average high for August is 81° 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.