S
M
T
W
T
F
S
26
85°
65°
27
83°
65°
28
66°
59°
29
86°
64°
30
75°
64°
1
68°
55°
2
74°
54°
3
74°
48°
4
79°
46°
5
81°
51°
6
84°
62°
7
81°
66°
8
70°
60°
9
70°
61°
10
81°
63°
11
86°
63°
12
70°
61°
13
83°
57°
14
81°
61°
15
82°
50°
16
87°
65°
17
92°
66°
18
90°
65°
19
90°
64°
20
89°
67°
21
90°
69°
22
86°
70°
23
84°
67°
24
86°
69°
25
84°
69°
26
88°
67°
27
84°
69°
28
87°
68°
29
88°
66°
30
89°
70°
31
88°
69°
1
90°
70°
2
90°
71°
3
86°
70°
4
84°
71°
5
85°
71°
6
85°
70°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Brookhaven
Brookhaven's May 2026 forecast shows daily high temperatures ranging from 84° to 92°, with overnight lows between 64° and 71°. The average high for May is 87° with an average low of 68°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Brookhaven. See also: June | July | August.