S
M
T
W
T
F
S
30
102°
70°
31
98°
68°
1
95°
67°
2
96°
64°
3
102°
69°
4
102°
66°
5
101°
73°
6
95°
70°
7
97°
71°
8
99°
71°
9
95°
65°
10
89°
64°
11
100°
66°
12
98°
67°
13
88°
61°
14
83°
62°
15
83°
60°
16
84°
61°
17
87°
62°
18
85°
58°
19
83°
59°
20
82°
54°
21
85°
61°
22
80°
60°
23
84°
59°
24
80°
59°
25
79°
58°
26
82°
59°
27
82°
58°
28
75°
58°
29
78°
46°
30
76°
45°
1
69°
45°
2
70°
44°
3
70°
46°
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 69° to 100°, with overnight lows between 44° and 71°. The average high for September is 84° with an average low of 58°. 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.
