S
M
T
W
T
F
S
27
67°
49°
28
74°
50°
29
74°
49°
30
66°
47°
1
65°
48°
2
65°
48°
3
72°
47°
4
71°
49°
5
72°
48°
6
64°
48°
7
67°
49°
8
71°
46°
9
71°
44°
10
62°
43°
11
67°
40°
12
60°
43°
13
66°
45°
14
69°
45°
15
69°
44°
16
66°
45°
17
69°
40°
18
58°
37°
19
58°
43°
20
62°
44°
21
65°
44°
22
65°
42°
23
58°
39°
24
56°
39°
25
59°
42°
26
68°
38°
27
65°
31°
28
58°
31°
29
56°
35°
30
59°
40°
31
63°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Holliston
Holliston's October 2026 forecast shows daily high temperatures ranging from 56° to 74°, with overnight lows between 31° and 50°. The average high for October is 65° with an average low of 43°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how October weather will actually feel in Holliston. See also: November | December | January.