S
M
T
W
T
F
S
26
49°
34°
27
42°
30°
28
50°
31°
29
54°
28°
30
50°
30°
1
59°
28°
2
68°
32°
3
70°
36°
4
71°
40°
5
51°
28°
6
55°
26°
7
68°
42°
8
69°
45°
9
69°
44°
10
74°
36°
11
83°
46°
12
85°
50°
13
82°
47°
14
70°
42°
15
72°
40°
16
66°
37°
17
47°
33°
18
36°
29°
19
46°
28°
20
53°
35°
21
50°
33°
22
54°
37°
23
67°
43°
24
69°
43°
25
74°
47°
26
72°
44°
27
70°
40°
28
71°
42°
29
75°
43°
30
72°
43°
31
73°
40°
1
68°
39°
2
66°
41°
3
65°
40°
4
70°
44°
5
72°
45°
6
73°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in McKinnon
McKinnon's May 2026 forecast shows daily high temperatures ranging from 46° to 75°, with overnight lows between 28° and 47°. The average high for May is 66° with an average low of 41°. 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 McKinnon. See also: June | July | August.