S
M
T
W
T
F
S
26
55°
43°
27
61°
37°
28
59°
41°
29
51°
46°
30
55°
40°
1
58°
41°
2
54°
40°
3
57°
38°
4
60°
44°
5
65°
47°
6
65°
48°
7
64°
45°
8
62°
45°
9
61°
48°
10
62°
46°
11
62°
43°
12
63°
46°
13
63°
49°
14
66°
46°
15
63°
45°
16
63°
45°
17
61°
44°
18
62°
45°
19
66°
52°
20
66°
48°
21
65°
46°
22
65°
47°
23
64°
46°
24
65°
49°
25
66°
54°
26
68°
50°
27
67°
48°
28
66°
48°
29
70°
55°
30
75°
56°
31
74°
53°
1
71°
55°
2
74°
58°
3
77°
57°
4
70°
57°
5
77°
53°
6
71°
53°
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 51° to 77°, with overnight lows between 37° and 58°. The average high for May is 65° with an average low of 48°. 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.
