S
M
T
W
T
F
S
26
82°
56°
27
82°
64°
28
74°
62°
29
81°
55°
30
70°
54°
1
69°
50°
2
67°
42°
3
71°
43°
4
77°
47°
5
79°
55°
6
82°
52°
7
72°
43°
8
73°
47°
9
74°
48°
10
77°
49°
11
81°
53°
12
82°
54°
13
77°
58°
14
79°
59°
15
82°
59°
16
82°
58°
17
83°
59°
18
84°
60°
19
82°
60°
20
84°
59°
21
85°
61°
22
84°
61°
23
81°
60°
24
80°
61°
25
83°
62°
26
84°
62°
27
79°
60°
28
80°
57°
29
83°
61°
30
84°
58°
31
83°
62°
1
84°
63°
2
87°
64°
3
88°
64°
4
88°
63°
5
82°
62°
6
82°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Hamilton
Hamilton's May 2026 forecast shows daily high temperatures ranging from 67° to 88°, with overnight lows between 42° and 64°. The average high for May is 80° with an average low of 57°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Hamilton. See also: June | July | August.