S
M
T
W
T
F
S
26
84°
60°
27
76°
58°
28
68°
56°
29
83°
62°
30
74°
59°
1
68°
56°
2
70°
49°
3
70°
43°
4
79°
44°
5
79°
47°
6
81°
63°
7
70°
56°
8
72°
49°
9
71°
56°
10
82°
55°
11
81°
58°
12
72°
55°
13
79°
53°
14
73°
49°
15
79°
54°
16
86°
65°
17
89°
65°
18
90°
68°
19
87°
70°
20
87°
68°
21
89°
67°
22
87°
65°
23
85°
64°
24
83°
65°
25
84°
64°
26
85°
66°
27
87°
62°
28
84°
65°
29
85°
66°
30
83°
66°
31
84°
62°
1
83°
64°
2
86°
66°
3
86°
67°
4
87°
68°
5
86°
68°
6
87°
67°
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 73° to 90°, with overnight lows between 49° and 70°. The average high for May is 85° 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 May weather will actually feel in Brookhaven. See also: June | July | August.