S
M
T
W
T
F
S
29
63°
35°
30
80°
47°
31
69°
39°
1
42°
37°
2
72°
39°
3
64°
38°
4
62°
39°
5
53°
37°
6
51°
33°
7
38°
30°
8
69°
36°
9
68°
50°
10
54°
36°
11
62°
54°
12
82°
59°
13
80°
63°
14
81°
62°
15
74°
53°
16
73°
49°
17
63°
42°
18
56°
44°
19
62°
46°
20
64°
50°
21
69°
55°
22
70°
51°
23
62°
41°
24
61°
47°
25
67°
45°
26
58°
40°
27
57°
39°
28
58°
48°
29
67°
50°
30
68°
50°
1
69°
46°
2
59°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Chicago Heights
Chicago Heights's April 2026 forecast shows daily high temperatures ranging from 54° to 82°, with overnight lows between 36° and 63°. The average high for April is 66° with an average low of 48°. 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 Chicago Heights. See also: May | June | July.
