S
M
T
W
T
F
S
26
78°
61°
27
84°
73°
28
80°
66°
29
67°
56°
30
64°
48°
1
69°
48°
2
72°
44°
3
79°
40°
4
76°
56°
5
75°
65°
6
65°
49°
7
71°
45°
8
75°
46°
9
84°
55°
10
75°
63°
11
75°
49°
12
79°
44°
13
83°
50°
14
79°
51°
15
87°
62°
16
83°
72°
17
83°
71°
18
84°
75°
19
80°
65°
20
76°
66°
21
74°
64°
22
73°
65°
23
77°
63°
24
76°
64°
25
78°
65°
26
80°
66°
27
79°
64°
28
80°
65°
29
80°
61°
30
82°
63°
31
81°
61°
1
84°
65°
2
81°
64°
3
79°
62°
4
77°
58°
5
79°
63°
6
82°
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 73° to 84°, with overnight lows between 58° and 75°. The average high for May is 79° with an average low of 64°. 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.