S
M
T
W
T
F
S
26
63°
51°
27
64°
49°
28
75°
42°
29
78°
46°
30
81°
47°
1
82°
51°
2
84°
51°
3
63°
55°
4
68°
54°
5
65°
51°
6
77°
46°
7
86°
51°
8
83°
53°
9
85°
53°
10
88°
53°
11
92°
54°
12
71°
55°
13
76°
56°
14
77°
52°
15
72°
53°
16
76°
57°
17
71°
53°
18
81°
52°
19
85°
52°
20
89°
52°
21
89°
54°
22
79°
54°
23
79°
54°
24
76°
54°
25
76°
49°
26
66°
55°
27
65°
52°
28
64°
47°
29
74°
50°
30
84°
57°
31
89°
57°
1
89°
57°
2
87°
56°
3
88°
61°
4
89°
59°
5
88°
61°
6
90°
62°
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 74° to 90°, with overnight lows between 50° and 62°. The average high for May is 86° with an average low of 58°. 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.
