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
85°
62°
13
86°
65°
14
92°
74°
15
96°
67°
16
91°
66°
17
88°
59°
18
81°
67°
19
82°
65°
20
83°
63°
21
82°
62°
22
80°
63°
23
81°
62°
24
83°
65°
25
84°
63°
26
81°
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
July Weather in Marlborough
Marlborough's July 2026 forecast shows daily high temperatures ranging from 79° to 96°, with overnight lows between 59° and 74°. 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.