S
M
T
W
T
F
S
26
66°
48°
27
67°
49°
28
71°
54°
29
73°
57°
30
73°
57°
1
75°
56°
2
67°
51°
3
66°
51°
4
67°
50°
5
69°
57°
6
76°
58°
7
77°
59°
8
77°
54°
9
68°
53°
10
68°
54°
11
69°
58°
12
73°
59°
13
74°
61°
14
80°
62°
15
80°
62°
16
78°
61°
17
76°
61°
18
72°
55°
19
72°
53°
20
73°
61°
21
74°
62°
22
76°
56°
23
77°
57°
24
77°
58°
25
79°
57°
26
76°
56°
27
77°
59°
28
77°
62°
29
81°
62°
30
82°
57°
31
79°
58°
1
79°
58°
2
82°
61°
3
85°
66°
4
86°
66°
5
86°
65°
6
87°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Crest Hill
Crest Hill's May 2026 forecast shows daily high temperatures ranging from 66° to 87°, with overnight lows between 48° and 66°. The average high for May is 75° with an average low of 58°. 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 Crest Hill. See also: June | July | August.