S
M
T
W
T
F
S
29
62°
38°
30
81°
48°
31
69°
40°
1
41°
35°
2
70°
38°
3
61°
39°
4
58°
39°
5
52°
35°
6
51°
32°
7
42°
29°
8
71°
36°
9
69°
51°
10
57°
39°
11
58°
35°
12
81°
57°
13
76°
62°
14
80°
58°
15
72°
58°
16
73°
52°
17
82°
49°
18
60°
36°
19
51°
33°
20
56°
32°
21
75°
46°
22
78°
51°
23
80°
50°
24
69°
54°
25
63°
44°
26
64°
45°
27
69°
52°
28
64°
49°
29
59°
41°
30
55°
41°
1
52°
38°
2
57°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Lemont
Lemont's April 2026 forecast shows daily high temperatures ranging from 52° to 69°, with overnight lows between 38° and 52°. The average high for April is 59° with an average low of 44°. 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 Lemont. See also: May | June | July.