S
M
T
W
T
F
S
26
81°
54°
27
84°
63°
28
61°
55°
29
64°
46°
30
66°
39°
1
64°
43°
2
63°
41°
3
81°
39°
4
84°
54°
5
70°
46°
6
63°
41°
7
68°
39°
8
75°
46°
9
82°
55°
10
70°
48°
11
79°
43°
12
82°
50°
13
75°
50°
14
77°
45°
15
82°
61°
16
79°
64°
17
91°
71°
18
82°
72°
19
78°
53°
20
68°
51°
21
73°
52°
22
79°
56°
23
84°
61°
24
85°
63°
25
80°
59°
26
82°
61°
27
83°
64°
28
81°
62°
29
80°
58°
30
79°
63°
31
83°
64°
1
84°
64°
2
84°
63°
3
78°
61°
4
76°
57°
5
79°
63°
6
84°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Gray Summit
Gray Summit's May 2026 forecast shows daily high temperatures ranging from 68° to 91°, with overnight lows between 51° and 72°. The average high for May is 81° with an average low of 61°. 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 Gray Summit. See also: June | July | August.