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
69°
61°
7
67°
59°
8
85°
60°
9
89°
67°
10
87°
71°
11
86°
67°
12
N/A
13
84°
66°
14
92°
73°
15
96°
67°
16
91°
63°
17
88°
65°
18
84°
67°
19
86°
65°
20
85°
64°
21
84°
63°
22
80°
61°
23
81°
63°
24
80°
62°
25
79°
63°
26
79°
64°
27
80°
63°
28
80°
67°
29
81°
64°
30
79°
63°
31
79°
66°
1
80°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
July Weather in Marlborough
Marlborough's July 2026 forecast shows daily high temperatures ranging from 79° to 96°, with overnight lows between 61° and 73°. The average high for July 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 July weather will actually feel in Marlborough. See also: August | September | October.