S
M
T
W
T
F
S
27
57°
30°
28
71°
36°
29
69°
36°
30
68°
41°
1
67°
43°
2
76°
40°
3
72°
40°
4
75°
44°
5
77°
43°
6
74°
44°
7
72°
45°
8
72°
43°
9
74°
45°
10
67°
40°
11
65°
39°
12
67°
39°
13
68°
34°
14
65°
37°
15
65°
38°
16
61°
31°
17
49°
26°
18
56°
29°
19
60°
32°
20
61°
33°
21
60°
35°
22
59°
36°
23
55°
35°
24
50°
28°
25
53°
33°
26
56°
29°
27
45°
23°
28
50°
30°
29
56°
32°
30
52°
31°
31
55°
33°
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 45° to 77°, with overnight lows between 23° and 45°. The average high for October is 63° with an average low of 36°. 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.