S
M
T
W
T
F
S
29
48°
28°
30
61°
45°
31
53°
38°
1
40°
33°
2
49°
32°
3
73°
39°
4
64°
38°
5
59°
36°
6
41°
29°
7
32°
25°
8
46°
12°
9
66°
47°
10
55°
36°
11
47°
31°
12
56°
50°
13
62°
44°
14
65°
49°
15
69°
54°
16
63°
50°
17
65°
38°
18
54°
36°
19
59°
43°
20
62°
44°
21
62°
44°
22
56°
35°
23
49°
35°
24
53°
41°
25
55°
42°
26
55°
40°
27
51°
38°
28
55°
36°
29
55°
38°
30
60°
43°
1
58°
43°
2
62°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Belleville
Belleville's April 2026 forecast shows daily high temperatures ranging from 47° to 69°, with overnight lows between 31° and 54°. The average high for April is 58° 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 Belleville. See also: May | June | July.