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
75°
54°
16
74°
53°
17
70°
53°
18
75°
51°
19
76°
55°
20
74°
55°
21
72°
47°
22
69°
46°
23
69°
47°
24
70°
48°
25
70°
49°
26
71°
49°
27
71°
50°
28
72°
50°
29
72°
54°
30
74°
59°
31
78°
56°
1
74°
53°
2
76°
59°
3
79°
60°
4
80°
60°
5
81°
62°
6
83°
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.