S
M
T
W
T
F
S
27
66°
63°
28
63°
61°
29
73°
62°
30
78°
58°
1
83°
64°
2
86°
65°
3
69°
60°
4
64°
60°
5
72°
47°
6
63°
41°
7
68°
40°
8
77°
54°
9
74°
45°
10
69°
47°
11
64°
60°
12
73°
57°
13
74°
59°
14
80°
65°
15
67°
53°
16
78°
61°
17
62°
41°
18
58°
39°
19
61°
50°
20
66°
47°
21
60°
47°
22
67°
45°
23
60°
40°
24
58°
43°
25
61°
44°
26
65°
48°
27
63°
45°
28
59°
43°
29
58°
43°
30
59°
46°
31
57°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Hamilton
Hamilton's October 2026 forecast shows daily high temperatures ranging from 57° to 67°, with overnight lows between 40° and 50°. The average high for October is 61° with an average low of 45°. 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 Hamilton. See also: November | December | January.