S
M
T
W
T
F
S
30
95°
65°
31
96°
72°
1
98°
73°
2
96°
74°
3
97°
74°
4
97°
74°
5
99°
74°
6
101°
77°
7
99°
74°
8
99°
71°
9
97°
74°
10
97°
75°
11
95°
76°
12
97°
75°
13
97°
73°
14
98°
73°
15
97°
74°
16
98°
72°
17
101°
70°
18
100°
69°
19
101°
73°
20
100°
73°
21
99°
73°
22
93°
67°
23
89°
65°
24
87°
63°
25
85°
62°
26
89°
65°
27
87°
65°
28
86°
66°
29
87°
65°
30
82°
59°
1
86°
66°
2
77°
65°
3
85°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Dumas
Dumas's September 2026 forecast shows daily high temperatures ranging from 77° to 101°, with overnight lows between 59° and 73°. The average high for September is 90° 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 Dumas. See also: October | November | December.
