S
M
T
W
T
F
S
26
60°
44°
27
68°
51°
28
64°
50°
29
57°
39°
30
56°
38°
1
47°
37°
2
55°
45°
3
62°
50°
4
77°
48°
5
54°
42°
6
52°
41°
7
52°
41°
8
59°
48°
9
64°
47°
10
61°
51°
11
62°
50°
12
63°
51°
13
62°
49°
14
68°
50°
15
62°
47°
16
62°
46°
17
63°
55°
18
71°
55°
19
65°
54°
20
68°
56°
21
71°
56°
22
68°
55°
23
72°
52°
24
65°
50°
25
65°
52°
26
67°
58°
27
71°
56°
28
67°
55°
29
67°
51°
30
69°
50°
31
68°
50°
1
68°
56°
2
77°
55°
3
68°
54°
4
69°
52°
5
69°
52°
6
70°
53°
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 47° to 77°, with overnight lows between 37° and 58°. The average high for May is 65° with an average low of 51°. 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.
