S
M
T
W
T
F
S
28
85°
62°
29
88°
64°
30
89°
65°
1
94°
68°
2
99°
74°
3
99°
78°
4
93°
73°
5
81°
70°
6
64°
61°
7
71°
63°
8
81°
63°
9
84°
71°
10
89°
69°
11
83°
63°
12
82°
62°
13
86°
63°
14
88°
66°
15
88°
64°
16
82°
63°
17
84°
64°
18
83°
64°
19
82°
63°
20
79°
61°
21
79°
60°
22
80°
61°
23
79°
61°
24
80°
62°
25
83°
63°
26
84°
65°
27
84°
67°
28
85°
67°
29
85°
66°
30
84°
67°
31
83°
67°
1
84°
66°
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 64° to 89°, with overnight lows between 60° and 71°. The average high for July is 82° with an average low of 64°. 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.