S
M
T
W
T
F
S
28
81°
58°
29
84°
54°
30
88°
52°
1
94°
67°
2
98°
74°
3
97°
71°
4
94°
71°
5
84°
65°
6
74°
61°
7
68°
61°
8
83°
60°
9
91°
61°
10
88°
63°
11
84°
58°
12
83°
54°
13
85°
53°
14
89°
69°
15
84°
60°
16
87°
55°
17
83°
51°
18
81°
52°
19
80°
51°
20
82°
46°
21
78°
55°
22
85°
61°
23
79°
54°
24
84°
49°
25
80°
48°
26
76°
43°
27
85°
44°
28
84°
60°
29
72°
66°
30
74°
58°
31
79°
61°
1
84°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Holliston
Holliston's July 2026 forecast shows daily high temperatures ranging from 74° to 84°, with overnight lows between 58° and 65°. The average high for July is 79° 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 Holliston. See also: August | September | October.
