S
M
T
W
T
F
S
26
88°
71°
27
88°
71°
28
87°
70°
29
85°
71°
30
87°
67°
31
81°
64°
1
81°
65°
2
82°
66°
3
82°
68°
4
83°
66°
5
82°
65°
6
82°
68°
7
86°
70°
8
85°
70°
9
83°
68°
10
84°
63°
11
83°
63°
12
82°
64°
13
83°
68°
14
85°
69°
15
87°
67°
16
88°
69°
17
88°
69°
18
87°
67°
19
87°
61°
20
84°
61°
21
80°
62°
22
80°
61°
23
81°
60°
24
80°
61°
25
81°
61°
26
82°
62°
27
82°
62°
28
81°
63°
29
82°
61°
30
79°
61°
31
81°
65°
1
84°
59°
2
85°
58°
3
78°
59°
4
79°
60°
5
80°
65°
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 78° to 88°, with overnight lows between 58° and 71°. The average high for August is 83° with an average low of 65°. 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.