S
M
T
W
T
F
S
26
86°
66°
27
86°
67°
28
85°
66°
29
85°
66°
30
84°
64°
31
78°
61°
1
78°
59°
2
79°
59°
3
79°
62°
4
80°
62°
5
79°
61°
6
79°
63°
7
80°
64°
8
78°
63°
9
79°
64°
10
83°
57°
11
80°
57°
12
84°
62°
13
81°
63°
14
84°
64°
15
85°
63°
16
85°
63°
17
86°
62°
18
86°
63°
19
84°
59°
20
81°
56°
21
78°
55°
22
78°
54°
23
77°
54°
24
77°
55°
25
81°
56°
26
83°
55°
27
83°
54°
28
81°
58°
29
79°
59°
30
78°
58°
31
82°
60°
1
82°
52°
2
81°
51°
3
74°
53°
4
76°
54°
5
78°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Marlboro
Marlboro's August 2026 forecast shows daily high temperatures ranging from 74° to 86°, with overnight lows between 51° and 67°. The average high for August is 81° 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 Marlboro. See also: September | October | November.