S
M
T
W
T
F
S
26
79°
55°
27
79°
52°
28
70°
57°
29
81°
63°
30
68°
52°
1
70°
50°
2
66°
46°
3
68°
39°
4
77°
43°
5
79°
48°
6
72°
63°
7
66°
50°
8
72°
43°
9
77°
52°
10
82°
52°
11
73°
54°
12
77°
50°
13
81°
52°
14
72°
52°
15
77°
41°
16
81°
54°
17
90°
57°
18
89°
66°
19
90°
67°
20
85°
67°
21
83°
67°
22
83°
67°
23
79°
65°
24
80°
64°
25
81°
65°
26
82°
64°
27
83°
65°
28
83°
64°
29
82°
63°
30
81°
63°
31
82°
60°
1
85°
63°
2
85°
64°
3
84°
64°
4
80°
62°
5
80°
59°
6
85°
65°
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 79° to 90°, with overnight lows between 59° and 67°. The average high for May is 83° with an average low of 64°. 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.