S
M
T
W
T
F
S
26
79°
59°
27
83°
53°
28
76°
57°
29
77°
62°
30
67°
53°
1
70°
50°
2
65°
51°
3
67°
43°
4
78°
45°
5
79°
52°
6
73°
62°
7
65°
53°
8
71°
44°
9
76°
51°
10
82°
55°
11
72°
55°
12
76°
50°
13
78°
57°
14
69°
51°
15
76°
43°
16
84°
54°
17
90°
63°
18
91°
62°
19
90°
66°
20
87°
65°
21
80°
65°
22
78°
64°
23
80°
63°
24
81°
65°
25
82°
64°
26
82°
64°
27
81°
63°
28
79°
60°
29
83°
61°
30
81°
68°
31
79°
62°
1
84°
62°
2
84°
61°
3
82°
62°
4
79°
61°
5
79°
56°
6
82°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in McMillan
McMillan's May 2026 forecast shows daily high temperatures ranging from 78° to 91°, with overnight lows between 56° and 68°. The average high for May is 83° with an average low of 63°. 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 McMillan. See also: June | July | August.
