S
M
T
W
T
F
S
29
63°
39°
30
79°
42°
31
73°
37°
1
37°
33°
2
68°
35°
3
60°
37°
4
51°
39°
5
52°
36°
6
51°
31°
7
34°
26°
8
70°
34°
9
68°
41°
10
50°
31°
11
50°
27°
12
81°
47°
13
76°
58°
14
81°
54°
15
72°
57°
16
70°
45°
17
77°
43°
18
62°
39°
19
47°
31°
20
48°
41°
21
73°
47°
22
63°
51°
23
78°
59°
24
67°
45°
25
59°
42°
26
56°
44°
27
57°
43°
28
55°
43°
29
54°
38°
30
53°
39°
1
53°
44°
2
62°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Waukegan
Waukegan's April 2026 forecast shows daily high temperatures ranging from 47° to 78°, with overnight lows between 31° and 59°. The average high for April is 59° with an average low of 43°. 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 Waukegan. See also: May | June | July.
