S
M
T
W
T
F
S
26
68°
50°
27
77°
43°
28
76°
59°
29
66°
46°
30
60°
40°
1
56°
37°
2
56°
34°
3
63°
30°
4
76°
44°
5
69°
50°
6
60°
41°
7
61°
36°
8
71°
38°
9
75°
52°
10
71°
51°
11
72°
39°
12
76°
39°
13
71°
47°
14
66°
40°
15
67°
38°
16
76°
53°
17
86°
62°
18
87°
63°
19
87°
65°
20
70°
55°
21
69°
53°
22
67°
56°
23
74°
63°
24
75°
60°
25
78°
65°
26
77°
67°
27
74°
63°
28
80°
58°
29
80°
57°
30
74°
56°
31
75°
54°
1
78°
58°
2
74°
58°
3
75°
56°
4
76°
61°
5
79°
58°
6
76°
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 80°, with overnight lows between 54° and 67°. The average high for May is 77° with an average low of 60°. 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.
