S
M
T
W
T
F
S
26
86°
63°
27
89°
59°
28
68°
47°
29
70°
49°
30
58°
50°
1
58°
46°
2
67°
48°
3
76°
52°
4
80°
59°
5
79°
56°
6
76°
57°
7
72°
55°
8
77°
56°
9
74°
59°
10
77°
57°
11
81°
62°
12
80°
58°
13
71°
55°
14
71°
53°
15
72°
53°
16
74°
57°
17
80°
63°
18
82°
63°
19
82°
64°
20
83°
64°
21
82°
63°
22
82°
65°
23
79°
64°
24
77°
65°
25
77°
66°
26
78°
65°
27
77°
65°
28
78°
64°
29
80°
64°
30
82°
63°
31
82°
66°
1
84°
67°
2
86°
68°
3
87°
68°
4
88°
69°
5
87°
69°
6
83°
68°
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 58° to 89°, with overnight lows between 46° and 69°. The average high for May is 78° 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.
