S
M
T
W
T
F
S
26
83°
60°
27
73°
54°
28
68°
54°
29
85°
60°
30
76°
59°
1
69°
57°
2
70°
48°
3
73°
42°
4
81°
43°
5
82°
50°
6
85°
63°
7
75°
57°
8
74°
50°
9
71°
56°
10
84°
59°
11
83°
57°
12
72°
54°
13
81°
52°
14
78°
57°
15
79°
46°
16
88°
51°
17
92°
63°
18
92°
61°
19
91°
63°
20
93°
66°
21
90°
66°
22
89°
68°
23
80°
65°
24
81°
66°
25
83°
69°
26
87°
69°
27
87°
68°
28
88°
68°
29
81°
67°
30
79°
66°
31
71°
63°
1
80°
62°
2
83°
61°
3
79°
62°
4
78°
63°
5
78°
64°
6
81°
64°
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 71° to 88°, with overnight lows between 61° and 68°. The average high for May is 80° 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.