S
M
T
W
T
F
S
26
67°
38°
27
73°
37°
28
69°
48°
29
58°
44°
30
50°
38°
1
53°
30°
2
50°
36°
3
59°
36°
4
70°
44°
5
72°
47°
6
54°
43°
7
54°
36°
8
55°
40°
9
67°
32°
10
54°
38°
11
54°
32°
12
56°
32°
13
48°
44°
14
54°
42°
15
63°
42°
16
74°
46°
17
76°
51°
18
76°
63°
19
82°
62°
20
64°
33°
21
61°
36°
22
69°
45°
23
68°
49°
24
71°
47°
25
66°
51°
26
75°
52°
27
80°
59°
28
81°
61°
29
81°
60°
30
82°
62°
31
81°
61°
1
68°
51°
2
68°
54°
3
67°
54°
4
67°
55°
5
68°
55°
6
73°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Forest Park
Forest Park's May 2026 forecast shows daily high temperatures ranging from 61° to 82°, with overnight lows between 33° and 63°. The average high for May is 72° with an average low of 53°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Forest Park. See also: June | July | August.
