S
M
T
W
T
F
S
30
104°
75°
31
101°
71°
1
101°
71°
2
100°
74°
3
95°
72°
4
100°
74°
5
100°
73°
6
102°
73°
7
102°
74°
8
103°
74°
9
103°
77°
10
84°
69°
11
97°
75°
12
97°
75°
13
102°
74°
14
98°
75°
15
98°
74°
16
97°
71°
17
92°
67°
18
88°
65°
19
77°
59°
20
85°
65°
21
82°
65°
22
83°
61°
23
82°
59°
24
82°
65°
25
86°
66°
26
86°
64°
27
85°
65°
28
85°
65°
29
84°
64°
30
84°
63°
1
83°
63°
2
84°
62°
3
84°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Mustang
Mustang's September 2026 forecast shows daily high temperatures ranging from 77° to 102°, with overnight lows between 59° and 75°. The average high for September is 88° with an average low of 66°. 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 Mustang. See also: October | November | December.
