S
M
T
W
T
F
S
26
56°
36°
27
62°
38°
28
59°
36°
29
61°
33°
30
55°
39°
1
68°
32°
2
73°
43°
3
76°
43°
4
80°
41°
5
45°
37°
6
49°
33°
7
72°
42°
8
75°
46°
9
71°
45°
10
72°
46°
11
74°
47°
12
84°
52°
13
80°
50°
14
78°
49°
15
73°
45°
16
78°
51°
17
76°
50°
18
78°
51°
19
77°
47°
20
77°
51°
21
71°
46°
22
69°
48°
23
73°
52°
24
70°
51°
25
70°
47°
26
69°
45°
27
71°
52°
28
71°
53°
29
72°
55°
30
72°
53°
31
71°
48°
1
74°
56°
2
77°
55°
3
84°
57°
4
84°
58°
5
77°
58°
6
77°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in McDonald
McDonald's May 2026 forecast shows daily high temperatures ranging from 45° to 84°, with overnight lows between 33° and 58°. The average high for May is 73° with an average low of 49°. 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 McDonald. See also: June | July | August.