S
M
T
W
T
F
S
30
104°
74°
31
103°
75°
1
103°
74°
2
103°
77°
3
101°
75°
4
104°
75°
5
102°
75°
6
103°
75°
7
104°
74°
8
105°
78°
9
105°
78°
10
92°
74°
11
101°
69°
12
108°
74°
13
104°
81°
14
102°
78°
15
103°
77°
16
101°
74°
17
99°
73°
18
97°
72°
19
97°
70°
20
92°
69°
21
87°
66°
22
86°
63°
23
87°
62°
24
86°
63°
25
87°
63°
26
90°
62°
27
86°
66°
28
83°
65°
29
80°
64°
30
79°
65°
1
83°
64°
2
84°
64°
3
84°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Lawton
Lawton's September 2026 forecast shows daily high temperatures ranging from 79° to 103°, with overnight lows between 62° and 78°. The average high for September is 90° with an average low of 67°. 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 Lawton. See also: October | November | December.
