S
M
T
W
T
F
S
26
75°
41°
27
66°
57°
28
62°
51°
29
60°
42°
30
61°
37°
1
55°
41°
2
57°
38°
3
66°
39°
4
77°
48°
5
58°
47°
6
61°
43°
7
62°
47°
8
60°
48°
9
75°
52°
10
64°
40°
11
65°
42°
12
71°
55°
13
78°
54°
14
72°
54°
15
71°
51°
16
68°
52°
17
68°
50°
18
72°
52°
19
76°
51°
20
69°
47°
21
68°
48°
22
68°
47°
23
70°
50°
24
71°
52°
25
71°
50°
26
72°
49°
27
73°
50°
28
73°
51°
29
76°
55°
30
80°
57°
31
81°
59°
1
82°
57°
2
76°
57°
3
82°
61°
4
83°
62°
5
83°
61°
6
78°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Normal
Normal's May 2026 forecast shows daily high temperatures ranging from 60° to 83°, with overnight lows between 40° and 62°. The average high for May is 72° with an average low of 52°. 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 Normal. See also: June | July | August.