S
M
T
W
T
F
S
26
100°
78°
27
100°
78°
28
100°
79°
29
100°
74°
30
93°
76°
31
98°
77°
1
95°
72°
2
86°
68°
3
92°
68°
4
94°
73°
5
97°
76°
6
96°
75°
7
97°
75°
8
98°
74°
9
97°
75°
10
97°
74°
11
96°
73°
12
98°
73°
13
96°
74°
14
92°
71°
15
88°
68°
16
87°
68°
17
94°
75°
18
94°
74°
19
95°
75°
20
95°
75°
21
94°
74°
22
94°
75°
23
93°
75°
24
94°
74°
25
94°
75°
26
93°
75°
27
93°
74°
28
94°
74°
29
92°
72°
30
93°
73°
31
93°
73°
1
92°
72°
2
93°
73°
3
93°
72°
4
92°
73°
5
92°
72°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Dumas
Dumas's August 2026 forecast shows daily high temperatures ranging from 86° to 98°, with overnight lows between 68° and 76°. The average high for August is 94° with an average low of 73°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Dumas. See also: September | October | November.