S
M
T
W
T
F
S
26
57°
43°
27
68°
49°
28
64°
50°
29
62°
49°
30
61°
48°
1
64°
48°
2
61°
51°
3
60°
46°
4
72°
52°
5
77°
55°
6
67°
57°
7
64°
45°
8
62°
50°
9
58°
51°
10
71°
48°
11
61°
47°
12
63°
46°
13
60°
50°
14
65°
51°
15
66°
54°
16
71°
56°
17
72°
58°
18
75°
55°
19
73°
58°
20
72°
55°
21
68°
51°
22
67°
51°
23
68°
52°
24
69°
52°
25
73°
58°
26
77°
59°
27
72°
56°
28
74°
56°
29
71°
53°
30
75°
59°
31
79°
61°
1
78°
62°
2
77°
59°
3
77°
60°
4
80°
63°
5
80°
63°
6
81°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in McLean Heights
McLean Heights's May 2026 forecast shows daily high temperatures ranging from 58° to 81°, with overnight lows between 45° and 64°. The average high for May is 71° with an average low of 55°. 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 McLean Heights. See also: June | July | August.