S
M
T
W
T
F
S
26
65°
50°
27
62°
47°
28
60°
44°
29
63°
45°
30
59°
46°
1
68°
49°
2
62°
52°
3
63°
54°
4
63°
50°
5
64°
53°
6
63°
48°
7
67°
56°
8
68°
56°
9
66°
50°
10
64°
52°
11
74°
57°
12
73°
49°
13
67°
48°
14
66°
49°
15
68°
58°
16
75°
59°
17
77°
60°
18
77°
50°
19
67°
49°
20
67°
50°
21
69°
60°
22
78°
61°
23
79°
61°
24
79°
62°
25
78°
62°
26
77°
61°
27
73°
62°
28
72°
62°
29
72°
63°
30
75°
60°
31
72°
56°
1
80°
57°
2
74°
56°
3
73°
55°
4
75°
56°
5
76°
60°
6
77°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Lee's Summit
Lee's Summit's May 2026 forecast shows daily high temperatures ranging from 59° to 80°, with overnight lows between 44° and 63°. The average high for May is 70° 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 Lee's Summit. See also: June | July | August.