S
M
T
W
T
F
S
30
95°
68°
31
96°
67°
1
96°
68°
2
95°
70°
3
95°
69°
4
94°
70°
5
94°
70°
6
93°
64°
7
95°
62°
8
85°
65°
9
84°
68°
10
89°
67°
11
90°
68°
12
92°
68°
13
93°
59°
14
92°
57°
15
87°
56°
16
80°
56°
17
81°
60°
18
83°
58°
19
81°
57°
20
80°
56°
21
80°
56°
22
81°
58°
23
85°
62°
24
85°
63°
25
86°
62°
26
86°
62°
27
87°
59°
28
84°
58°
29
83°
59°
30
83°
56°
1
82°
57°
2
85°
60°
3
76°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Mangum
Mangum's September 2026 forecast shows daily high temperatures ranging from 76° to 96°, with overnight lows between 49° and 70°. The average high for September is 87° with an average low of 62°. 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 Mangum. See also: October | November | December.