S
M
T
W
T
F
S
26
86°
71°
27
91°
70°
28
92°
71°
29
90°
68°
30
87°
63°
31
90°
67°
1
89°
70°
2
80°
72°
3
82°
71°
4
83°
71°
5
87°
72°
6
88°
71°
7
89°
70°
8
90°
72°
9
90°
69°
10
89°
70°
11
89°
69°
12
90°
71°
13
89°
72°
14
90°
72°
15
89°
69°
16
86°
68°
17
87°
69°
18
91°
72°
19
91°
69°
20
87°
68°
21
89°
71°
22
90°
71°
23
90°
70°
24
85°
69°
25
86°
66°
26
85°
66°
27
84°
65°
28
86°
66°
29
89°
68°
30
90°
70°
31
90°
70°
1
89°
71°
2
90°
71°
3
84°
70°
4
84°
68°
5
85°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Dallas
Dallas's August 2026 forecast shows daily high temperatures ranging from 80° to 91°, with overnight lows between 63° and 72°. The average high for August is 88° with an average low of 69°. 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 Dallas. See also: September | October | November.
