S
M
T
W
T
F
S
28
75°
59°
29
76°
59°
30
78°
60°
1
81°
64°
2
78°
63°
3
83°
62°
4
84°
60°
5
82°
62°
6
83°
61°
7
85°
60°
8
82°
65°
9
81°
60°
10
80°
58°
11
78°
58°
12
79°
60°
13
80°
61°
14
79°
62°
15
79°
60°
16
80°
61°
17
81°
60°
18
79°
59°
19
80°
59°
20
80°
63°
21
81°
64°
22
83°
66°
23
83°
62°
24
86°
59°
25
81°
64°
26
80°
63°
27
85°
61°
28
81°
60°
29
79°
60°
30
78°
62°
31
82°
62°
1
83°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Marlborough
Marlborough's July 2026 forecast shows daily high temperatures ranging from 75° to 86°, with overnight lows between 58° and 66°. The average high for July is 81° with an average low of 61°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in Marlborough. See also: August | September | October.