S
M
T
W
T
F
S
26
85°
61°
27
86°
61°
28
76°
67°
29
81°
65°
30
73°
60°
1
65°
57°
2
72°
48°
3
74°
44°
4
81°
46°
5
79°
53°
6
80°
67°
7
74°
59°
8
68°
54°
9
77°
60°
10
81°
59°
11
80°
63°
12
81°
59°
13
83°
55°
14
80°
54°
15
82°
50°
16
85°
56°
17
88°
58°
18
89°
64°
19
91°
71°
20
90°
70°
21
86°
71°
22
76°
69°
23
86°
68°
24
81°
69°
25
79°
70°
26
82°
70°
27
83°
70°
28
84°
69°
29
78°
68°
30
81°
67°
31
82°
66°
1
79°
64°
2
80°
63°
3
81°
61°
4
80°
63°
5
82°
66°
6
86°
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 78° to 86°, with overnight lows between 61° and 70°. The average high for May is 82° with an average low of 66°. 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.