S
M
T
W
T
F
S
30
94°
74°
31
94°
74°
1
93°
73°
2
88°
73°
3
93°
74°
4
93°
73°
5
92°
72°
6
93°
73°
7
90°
68°
8
90°
69°
9
89°
67°
10
91°
66°
11
85°
69°
12
91°
70°
13
92°
69°
14
92°
59°
15
93°
58°
16
77°
61°
17
78°
62°
18
76°
65°
19
83°
65°
20
84°
64°
21
87°
61°
22
87°
61°
23
86°
59°
24
86°
64°
25
85°
64°
26
83°
61°
27
84°
54°
28
75°
54°
29
74°
56°
30
73°
53°
1
74°
52°
2
75°
53°
3
75°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Norman
Norman's September 2026 forecast shows daily high temperatures ranging from 73° to 94°, with overnight lows between 52° and 74°. The average high for September is 86° 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 September weather will actually feel in Norman. See also: October | November | December.