S
M
T
W
T
F
S
26
80°
62°
27
85°
62°
28
85°
61°
29
80°
60°
30
79°
56°
31
78°
58°
1
79°
59°
2
77°
57°
3
78°
56°
4
77°
56°
5
76°
54°
6
78°
58°
7
81°
55°
8
Hist. Avg.
82°
57°
9
Hist. Avg.
82°
57°
10
Hist. Avg.
82°
57°
11
Hist. Avg.
82°
57°
12
Hist. Avg.
81°
56°
13
Hist. Avg.
81°
56°
14
Hist. Avg.
81°
56°
15
Hist. Avg.
81°
56°
16
Hist. Avg.
81°
56°
17
Hist. Avg.
81°
56°
18
Hist. Avg.
80°
56°
19
Hist. Avg.
80°
55°
20
Hist. Avg.
80°
55°
21
Hist. Avg.
80°
55°
22
Hist. Avg.
80°
55°
23
Hist. Avg.
80°
55°
24
Hist. Avg.
79°
54°
25
Hist. Avg.
79°
54°
26
Hist. Avg.
79°
54°
27
Hist. Avg.
79°
54°
28
Hist. Avg.
79°
53°
29
Hist. Avg.
78°
53°
30
Hist. Avg.
78°
53°
31
Hist. Avg.
78°
53°
1
Hist. Avg.
78°
52°
2
Hist. Avg.
77°
52°
3
Hist. Avg.
77°
52°
4
Hist. Avg.
77°
51°
5
Hist. Avg.
77°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Brookline
Brookline's August 2026 forecast shows daily high temperatures ranging from 76° to 85°, with overnight lows between 54° and 62°. The average high for August is 79° with an average low of 58°. 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.