S
M
T
W
T
F
S
26
68°
53°
27
71°
52°
28
66°
50°
29
58°
38°
30
55°
40°
1
51°
38°
2
57°
40°
3
65°
43°
4
61°
46°
5
61°
45°
6
61°
47°
7
65°
46°
8
62°
48°
9
68°
47°
10
61°
46°
11
63°
50°
12
64°
47°
13
63°
43°
14
62°
44°
15
63°
44°
16
65°
48°
17
67°
51°
18
74°
55°
19
74°
50°
20
70°
49°
21
66°
49°
22
66°
48°
23
73°
56°
24
76°
57°
25
77°
56°
26
72°
51°
27
68°
50°
28
71°
57°
29
77°
58°
30
79°
58°
31
79°
59°
1
78°
59°
2
81°
60°
3
81°
60°
4
79°
55°
5
71°
54°
6
74°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Park Forest
Park Forest's May 2026 forecast shows daily high temperatures ranging from 51° to 81°, with overnight lows between 38° and 60°. The average high for May is 68° with an average low of 50°. 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 Park Forest. See also: June | July | August.
