S
M
T
W
T
F
S
29
41°
31°
30
59°
29°
31
52°
38°
1
43°
32°
2
46°
32°
3
67°
38°
4
51°
36°
5
45°
35°
6
40°
27°
7
32°
20°
8
37°
33°
9
52°
35°
10
47°
35°
11
50°
33°
12
50°
47°
13
59°
46°
14
50°
36°
15
42°
34°
16
44°
33°
17
46°
39°
18
51°
40°
19
52°
37°
20
57°
43°
21
53°
42°
22
50°
43°
23
57°
45°
24
57°
40°
25
48°
37°
26
47°
39°
27
48°
38°
28
50°
41°
29
49°
38°
30
48°
40°
1
49°
39°
2
49°
36°
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 32° to 59°, with overnight lows between 20° and 47°. The average high for April is 49° with an average low of 38°. 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.