S
M
T
W
T
F
S
29
78°
49°
30
84°
65°
31
83°
69°
1
78°
65°
2
80°
61°
3
76°
53°
4
58°
42°
5
62°
37°
6
70°
38°
7
74°
51°
8
77°
55°
9
78°
58°
10
73°
58°
11
77°
64°
12
73°
64°
13
78°
66°
14
75°
49°
15
66°
47°
16
69°
52°
17
74°
59°
18
75°
62°
19
77°
62°
20
83°
59°
21
75°
56°
22
75°
51°
23
65°
54°
24
75°
53°
25
72°
56°
26
75°
56°
27
74°
55°
28
73°
55°
29
70°
54°
30
65°
54°
1
66°
56°
2
67°
56°
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 65° to 83°, with overnight lows between 47° and 66°. The average high for April is 73° with an average low of 56°. 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.