S
M
T
W
T
F
S
26
72°
60°
27
77°
59°
28
85°
65°
29
69°
65°
30
73°
63°
31
75°
66°
1
89°
69°
2
84°
71°
3
79°
65°
4
85°
63°
5
83°
69°
6
90°
71°
7
91°
70°
8
89°
70°
9
88°
69°
10
86°
67°
11
84°
64°
12
80°
62°
13
79°
60°
14
80°
62°
15
82°
62°
16
79°
61°
17
79°
66°
18
79°
63°
19
80°
66°
20
79°
63°
21
79°
61°
22
78°
64°
23
82°
66°
24
84°
66°
25
83°
65°
26
78°
64°
27
78°
64°
28
77°
66°
29
80°
64°
30
82°
65°
31
81°
64°
1
83°
60°
2
75°
58°
3
74°
60°
4
75°
58°
5
75°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Brookline
Brookline's August 2026 forecast shows daily high temperatures ranging from 74° to 91°, with overnight lows between 56° and 71°. The average high for August is 81° with an average low of 64°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Brookline. See also: September | October | November.
