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
79°
60°
25
79°
57°
26
78°
59°
27
81°
64°
28
83°
69°
29
78°
59°
30
81°
68°
31
81°
65°
1
80°
69°
2
84°
71°
3
83°
66°
4
81°
64°
5
76°
61°
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 76° to 84°, with overnight lows between 59° and 71°. The average high for August is 81° with an average low of 65°. 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.