S
M
T
W
T
F
S
26
88°
72°
27
87°
74°
28
88°
73°
29
88°
73°
30
89°
72°
31
89°
73°
1
90°
73°
2
91°
72°
3
87°
71°
4
89°
70°
5
91°
73°
6
92°
70°
7
93°
69°
8
92°
72°
9
92°
67°
10
88°
71°
11
92°
72°
12
93°
72°
13
90°
71°
14
89°
73°
15
93°
73°
16
92°
72°
17
92°
73°
18
91°
73°
19
92°
72°
20
88°
72°
21
88°
71°
22
92°
72°
23
92°
72°
24
91°
71°
25
91°
71°
26
87°
69°
27
90°
70°
28
91°
71°
29
91°
71°
30
89°
72°
31
92°
70°
1
89°
68°
2
87°
70°
3
90°
69°
4
90°
69°
5
89°
70°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Brookhaven
Brookhaven's August 2026 forecast shows daily high temperatures ranging from 87° to 93°, with overnight lows between 67° and 74°. The average high for August is 90° with an average low of 71°. 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 Brookhaven. See also: September | October | November.