S
M
T
W
T
F
S
26
76°
43°
27
85°
44°
28
84°
60°
29
72°
66°
30
72°
57°
31
79°
61°
1
84°
65°
2
81°
67°
3
80°
64°
4
82°
61°
5
81°
62°
6
84°
63°
7
85°
62°
8
86°
64°
9
84°
63°
10
85°
61°
11
83°
63°
12
84°
60°
13
81°
64°
14
85°
63°
15
81°
59°
16
78°
57°
17
78°
60°
18
79°
59°
19
77°
59°
20
77°
57°
21
78°
62°
22
77°
62°
23
78°
61°
24
78°
59°
25
77°
57°
26
78°
55°
27
77°
57°
28
77°
56°
29
76°
54°
30
76°
56°
31
79°
60°
1
80°
61°
2
80°
61°
3
79°
59°
4
76°
57°
5
75°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Holliston
Holliston's August 2026 forecast shows daily high temperatures ranging from 72° to 86°, with overnight lows between 54° and 67°. The average high for August is 80° with an average low of 60°. 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 Holliston. See also: September | October | November.
