S
M
T
W
T
F
S
26
90°
74°
27
90°
74°
28
91°
73°
29
90°
74°
30
92°
75°
31
93°
75°
1
91°
74°
2
91°
74°
3
92°
75°
4
93°
74°
5
93°
74°
6
94°
75°
7
93°
75°
8
94°
74°
9
89°
73°
10
91°
73°
11
92°
73°
12
92°
74°
13
91°
72°
14
90°
73°
15
91°
72°
16
90°
73°
17
91°
73°
18
92°
72°
19
93°
72°
20
93°
73°
21
92°
72°
22
92°
73°
23
93°
73°
24
90°
72°
25
90°
73°
26
91°
72°
27
90°
70°
28
90°
72°
29
91°
72°
30
92°
73°
31
94°
71°
1
92°
72°
2
91°
71°
3
90°
72°
4
89°
71°
5
90°
72°
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 89° to 94°, with overnight lows between 70° and 75°. The average high for August is 91° with an average low of 73°. 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.