S
M
T
W
T
F
S
26
86°
75°
27
88°
77°
28
88°
76°
29
87°
75°
30
89°
68°
1
68°
57°
2
76°
54°
3
79°
57°
4
82°
59°
5
83°
70°
6
85°
72°
7
79°
65°
8
76°
67°
9
91°
74°
10
89°
74°
11
82°
68°
12
86°
66°
13
90°
67°
14
91°
69°
15
90°
70°
16
88°
71°
17
87°
79°
18
88°
78°
19
87°
76°
20
83°
74°
21
81°
71°
22
81°
74°
23
81°
73°
24
82°
74°
25
83°
73°
26
85°
74°
27
84°
75°
28
86°
73°
29
85°
73°
30
86°
74°
31
87°
72°
1
88°
75°
2
91°
74°
3
87°
73°
4
87°
72°
5
88°
74°
6
87°
76°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Brookline
Brookline's May 2026 forecast shows daily high temperatures ranging from 81° to 91°, with overnight lows between 71° and 78°. The average high for May is 85° with an average low of 74°. 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 Brookline. See also: June | July | August.
