S
M
T
W
T
F
S
26
57°
40°
27
68°
46°
28
64°
51°
29
56°
39°
30
54°
36°
1
49°
33°
2
56°
30°
3
69°
46°
4
81°
44°
5
61°
48°
6
57°
38°
7
58°
38°
8
66°
50°
9
70°
43°
10
61°
40°
11
58°
40°
12
56°
43°
13
59°
44°
14
65°
50°
15
66°
48°
16
68°
51°
17
71°
57°
18
71°
55°
19
68°
54°
20
69°
49°
21
61°
45°
22
61°
44°
23
62°
47°
24
63°
48°
25
64°
47°
26
64°
46°
27
65°
47°
28
67°
48°
29
69°
53°
30
74°
54°
31
75°
56°
1
75°
53°
2
68°
54°
3
76°
58°
4
77°
59°
5
77°
57°
6
68°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Libertyville
Libertyville's May 2026 forecast shows daily high temperatures ranging from 56° to 77°, with overnight lows between 38° and 59°. The average high for May is 67° 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 Libertyville. See also: June | July | August.