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
50°
34°
11
58°
30°
12
80°
55°
13
79°
63°
14
80°
56°
15
72°
59°
16
72°
47°
17
81°
46°
18
61°
38°
19
52°
31°
20
55°
29°
21
78°
45°
22
68°
46°
23
80°
45°
24
70°
49°
25
N/A
26
68°
54°
27
72°
53°
28
66°
46°
29
58°
39°
30
54°
40°
1
51°
38°
2
57°
38°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
April Weather in Flossmoor
Flossmoor's April 2026 forecast shows daily high temperatures ranging from 51° to 72°, with overnight lows between 38° and 54°. The average high for April is 61° 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 Flossmoor. See also: May | June | July.