S
M
T
W
T
F
S
30
104°
76°
31
104°
74°
1
103°
73°
2
100°
74°
3
101°
72°
4
97°
72°
5
100°
73°
6
96°
72°
7
94°
70°
8
93°
69°
9
94°
71°
10
95°
71°
11
95°
70°
12
94°
70°
13
93°
68°
14
92°
68°
15
93°
69°
16
93°
70°
17
92°
67°
18
92°
66°
19
84°
65°
20
91°
66°
21
88°
65°
22
90°
66°
23
91°
65°
24
89°
65°
25
88°
63°
26
78°
61°
27
79°
63°
28
88°
64°
29
88°
62°
30
87°
62°
1
88°
61°
2
86°
63°
3
88°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Altus
Altus's September 2026 forecast shows daily high temperatures ranging from 78° to 104°, with overnight lows between 61° and 76°. The average high for September is 92° with an average low of 68°. 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 Altus. See also: October | November | December.
