S
M
T
W
T
F
S
28
94°
74°
29
94°
78°
30
96°
78°
1
95°
79°
2
96°
79°
3
94°
80°
4
92°
70°
5
88°
71°
6
88°
70°
7
91°
69°
8
92°
73°
9
91°
75°
10
89°
75°
11
90°
74°
12
88°
72°
13
89°
73°
14
91°
72°
15
93°
71°
16
95°
72°
17
89°
71°
18
86°
69°
19
91°
75°
20
92°
74°
21
88°
70°
22
87°
68°
23
87°
71°
24
89°
71°
25
88°
72°
26
91°
74°
27
92°
75°
28
93°
76°
29
93°
76°
30
92°
75°
31
91°
74°
1
93°
75°
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 86° to 95°, with overnight lows between 68° and 76°. The average high for July is 90° with an average low of 73°. 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.