S
M
T
W
T
F
S
26
86°
66°
27
85°
66°
28
76°
62°
29
79°
58°
30
86°
57°
31
86°
61°
1
75°
66°
2
75°
57°
3
81°
55°
4
84°
58°
5
85°
65°
6
80°
63°
7
81°
62°
8
83°
63°
9
84°
64°
10
80°
61°
11
80°
62°
12
78°
60°
13
76°
61°
14
78°
60°
15
77°
59°
16
75°
62°
17
83°
63°
18
82°
64°
19
85°
63°
20
82°
62°
21
81°
62°
22
83°
63°
23
83°
63°
24
79°
62°
25
79°
62°
26
78°
62°
27
81°
62°
28
77°
61°
29
78°
60°
30
79°
61°
31
81°
60°
1
80°
58°
2
75°
57°
3
73°
58°
4
75°
59°
5
80°
59°
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 73° to 85°, with overnight lows between 55° and 65°. The average high for August is 80° with an average low of 61°. 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.