S
M
T
W
T
F
S
26
92°
73°
27
94°
74°
28
96°
78°
29
97°
74°
30
94°
76°
1
88°
65°
2
77°
60°
3
84°
56°
4
88°
64°
5
96°
74°
6
99°
78°
7
82°
72°
8
88°
69°
9
89°
71°
10
93°
73°
11
91°
67°
12
92°
67°
13
93°
65°
14
97°
65°
15
96°
68°
16
96°
73°
17
95°
80°
18
98°
78°
19
95°
77°
20
91°
76°
21
89°
76°
22
92°
76°
23
88°
73°
24
88°
72°
25
86°
74°
26
90°
73°
27
91°
75°
28
93°
77°
29
90°
76°
30
91°
74°
31
90°
74°
1
94°
73°
2
92°
75°
3
92°
74°
4
90°
73°
5
91°
74°
6
91°
76°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in McCook
McCook's May 2026 forecast shows daily high temperatures ranging from 86° to 95°, with overnight lows between 72° and 77°. The average high for May is 91° with an average low of 75°. 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 McCook. See also: June | July | August.
