S
M
T
W
T
F
S
26
81°
63°
27
88°
63°
28
66°
55°
29
68°
49°
30
65°
49°
1
68°
47°
2
73°
46°
3
82°
51°
4
81°
59°
5
72°
49°
6
64°
47°
7
73°
45°
8
82°
53°
9
81°
55°
10
63°
53°
11
75°
49°
12
80°
53°
13
83°
60°
14
88°
64°
15
79°
72°
16
86°
68°
17
86°
71°
18
88°
75°
19
80°
54°
20
64°
54°
21
67°
59°
22
79°
61°
23
79°
62°
24
81°
61°
25
83°
60°
26
81°
66°
27
75°
66°
28
84°
66°
29
91°
72°
30
94°
71°
31
97°
73°
1
96°
71°
2
92°
69°
3
81°
67°
4
83°
69°
5
86°
67°
6
87°
66°
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 81° to 97°, with overnight lows between 66° and 73°. The average high for May is 90° with an average low of 69°. 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.