S
M
T
W
T
F
S
26
103°
82°
27
103°
81°
28
104°
83°
29
105°
83°
30
104°
84°
31
106°
84°
1
105°
80°
2
99°
78°
3
103°
82°
4
98°
81°
5
99°
80°
6
98°
78°
7
100°
81°
8
101°
81°
9
100°
80°
10
100°
81°
11
99°
81°
12
100°
80°
13
100°
81°
14
99°
81°
15
100°
80°
16
100°
81°
17
99°
81°
18
95°
80°
19
98°
80°
20
99°
79°
21
99°
80°
22
98°
79°
23
98°
79°
24
95°
76°
25
91°
74°
26
91°
76°
27
92°
76°
28
90°
75°
29
89°
75°
30
90°
74°
31
90°
75°
1
89°
75°
2
89°
74°
3
92°
73°
4
93°
70°
5
94°
77°
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 89° to 106°, with overnight lows between 70° and 84°. The average high for August is 98° with an average low of 79°. 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.
