S
M
T
W
T
F
S
29
81°
45°
30
82°
54°
31
76°
56°
1
64°
50°
2
75°
40°
3
65°
48°
4
66°
40°
5
70°
43°
6
69°
46°
7
72°
48°
8
79°
46°
9
80°
48°
10
78°
52°
11
73°
53°
12
76°
45°
13
69°
55°
14
67°
48°
15
68°
41°
16
76°
40°
17
72°
45°
18
65°
36°
19
73°
42°
20
76°
51°
21
81°
51°
22
81°
53°
23
74°
49°
24
76°
42°
25
75°
57°
26
77°
47°
27
66°
41°
28
71°
42°
29
70°
43°
30
55°
38°
1
45°
35°
2
60°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Forest Park
Forest Park's April 2026 forecast shows daily high temperatures ranging from 45° to 71°, with overnight lows between 35° and 43°. The average high for April is 61° with an average low of 40°. 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 Forest Park. See also: May | June | July.