S
M
T
W
T
F
S
29
46°
34°
30
50°
31°
31
58°
34°
1
50°
43°
2
52°
42°
3
57°
40°
4
66°
42°
5
73°
46°
6
70°
42°
7
59°
40°
8
59°
38°
9
61°
39°
10
60°
41°
11
61°
43°
12
63°
44°
13
61°
46°
14
62°
45°
15
59°
42°
16
55°
41°
17
61°
45°
18
61°
44°
19
55°
41°
20
54°
40°
21
54°
40°
22
55°
41°
23
55°
39°
24
56°
38°
25
56°
39°
26
57°
42°
27
56°
42°
28
57°
39°
29
61°
43°
30
59°
44°
1
58°
45°
2
64°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Hamilton
Hamilton's April 2026 forecast shows daily high temperatures ranging from 52° to 73°, with overnight lows between 38° and 46°. The average high for April is 59° with an average low of 42°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how April weather will actually feel in Hamilton. See also: May | June | July.