S
M
T
W
T
F
S
26
88°
65°
27
88°
66°
28
87°
65°
29
87°
65°
30
86°
63°
31
80°
61°
1
80°
59°
2
81°
59°
3
81°
61°
4
82°
59°
5
81°
59°
6
81°
61°
7
82°
64°
8
80°
63°
9
81°
62°
10
86°
56°
11
83°
57°
12
86°
60°
13
85°
62°
14
86°
63°
15
87°
62°
16
88°
62°
17
88°
61°
18
87°
62°
19
86°
57°
20
83°
54°
21
80°
54°
22
80°
53°
23
79°
52°
24
79°
54°
25
82°
54°
26
85°
53°
27
85°
53°
28
83°
59°
29
80°
57°
30
78°
56°
31
84°
58°
1
85°
50°
2
84°
51°
3
77°
50°
4
78°
52°
5
79°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Marlborough
Marlborough's August 2026 forecast shows daily high temperatures ranging from 77° to 88°, with overnight lows between 50° and 66°. The average high for August is 83° 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 Marlborough. See also: September | October | November.
