S
M
T
W
T
F
S
26
82°
49°
27
87°
50°
28
83°
56°
29
71°
64°
30
81°
64°
31
85°
62°
1
89°
61°
2
89°
70°
3
82°
61°
4
88°
57°
5
89°
56°
6
93°
65°
7
93°
70°
8
91°
71°
9
91°
65°
10
86°
59°
11
86°
63°
12
85°
58°
13
83°
60°
14
81°
55°
15
81°
49°
16
82°
48°
17
76°
66°
18
86°
66°
19
86°
61°
20
86°
57°
21
81°
62°
22
74°
63°
23
72°
64°
24
81°
60°
25
79°
55°
26
84°
52°
27
83°
58°
28
87°
64°
29
79°
51°
30
81°
51°
31
83°
52°
1
70°
58°
2
73°
62°
3
77°
61°
4
84°
63°
5
77°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Hopkinton
Hopkinton's August 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for August is ° with an average low of °. 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 Hopkinton. See also: September | October | November.