S
M
T
W
T
F
S
26
45°
19°
27
48°
27°
28
42°
21°
29
48°
26°
30
50°
26°
1
67°
25°
2
69°
31°
3
75°
28°
4
46°
32°
5
35°
27°
6
50°
23°
7
58°
36°
8
61°
29°
9
54°
30°
10
60°
34°
11
63°
44°
12
60°
40°
13
67°
44°
14
66°
40°
15
67°
41°
16
64°
45°
17
66°
39°
18
65°
41°
19
63°
44°
20
77°
45°
21
61°
42°
22
67°
45°
23
64°
45°
24
60°
46°
25
70°
47°
26
67°
48°
27
69°
48°
28
72°
49°
29
72°
49°
30
73°
48°
31
67°
47°
1
72°
49°
2
73°
49°
3
73°
44°
4
62°
40°
5
62°
39°
6
63°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Norman
Norman's May 2026 forecast shows daily high temperatures ranging from 54° to 77°, with overnight lows between 29° and 49°. The average high for May is 66° with an average low of 43°. 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 Norman. See also: June | July | August.