S
M
T
W
T
F
S
26
82°
54°
27
82°
59°
28
81°
72°
29
78°
68°
30
76°
66°
31
83°
64°
1
83°
72°
2
82°
73°
3
79°
65°
4
83°
61°
5
83°
58°
6
85°
76°
7
90°
72°
8
87°
70°
9
90°
71°
10
85°
65°
11
86°
69°
12
85°
70°
13
85°
70°
14
83°
67°
15
82°
63°
16
81°
60°
17
77°
68°
18
84°
67°
19
84°
67°
20
84°
64°
21
69°
65°
22
74°
66°
23
81°
67°
24
N/A
25
80°
60°
26
79°
66°
27
80°
70°
28
81°
62°
29
81°
63°
30
77°
66°
31
78°
64°
1
76°
64°
2
77°
63°
3
75°
63°
4
77°
60°
5
78°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Brookhaven
Brookhaven's August 2026 forecast shows daily high temperatures ranging from 75° to 81°, with overnight lows between 60° and 70°. The average high for August is 78° with an average low of 64°. 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.