S
M
T
W
T
F
S
26
54°
44°
27
72°
62°
28
68°
50°
29
56°
43°
30
53°
40°
1
51°
38°
2
51°
38°
3
62°
49°
4
62°
47°
5
60°
49°
6
58°
46°
7
57°
46°
8
58°
46°
9
60°
48°
10
59°
47°
11
66°
52°
12
69°
52°
13
68°
47°
14
62°
45°
15
63°
45°
16
64°
46°
17
65°
48°
18
70°
56°
19
73°
52°
20
67°
48°
21
66°
49°
22
67°
49°
23
67°
55°
24
77°
59°
25
78°
58°
26
70°
54°
27
69°
54°
28
71°
59°
29
77°
60°
30
79°
60°
31
79°
61°
1
78°
62°
2
81°
63°
3
82°
63°
4
82°
57°
5
72°
57°
6
73°
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 51° to 82°, with overnight lows between 38° and 63°. The average high for May is 67° with an average low of 52°. 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.
