S
M
T
W
T
F
S
29
58°
32°
30
73°
46°
31
82°
62°
1
81°
52°
2
54°
42°
3
67°
42°
4
72°
43°
5
58°
43°
6
56°
44°
7
52°
29°
8
43°
36°
9
49°
42°
10
64°
52°
11
68°
48°
12
62°
52°
13
76°
61°
14
85°
57°
15
75°
50°
16
59°
45°
17
58°
48°
18
64°
48°
19
66°
45°
20
67°
51°
21
68°
50°
22
68°
52°
23
69°
52°
24
70°
51°
25
70°
45°
26
61°
46°
27
59°
44°
28
63°
45°
29
62°
43°
30
60°
43°
1
62°
46°
2
63°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Willowbrook
Willowbrook's April 2026 forecast shows daily high temperatures ranging from 43° to 85°, with overnight lows between 29° and 61°. The average high for April is 64° with an average low of 47°. 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 Willowbrook. See also: May | June | July.