S
M
T
W
T
F
S
26
99°
78°
27
100°
80°
28
100°
77°
29
99°
78°
30
100°
79°
31
103°
80°
1
98°
82°
2
96°
71°
3
101°
74°
4
100°
77°
5
100°
79°
6
100°
79°
7
101°
77°
8
100°
79°
9
100°
76°
10
99°
76°
11
100°
76°
12
102°
78°
13
101°
79°
14
100°
78°
15
101°
79°
16
103°
80°
17
105°
80°
18
105°
82°
19
104°
81°
20
105°
79°
21
102°
84°
22
106°
80°
23
108°
82°
24
107°
85°
25
100°
82°
26
100°
82°
27
102°
77°
28
102°
77°
29
101°
78°
30
100°
77°
31
98°
77°
1
96°
77°
2
98°
78°
3
100°
77°
4
99°
76°
5
98°
75°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Duncanville
Duncanville's August 2026 forecast shows daily high temperatures ranging from 96° to 101°, with overnight lows between 75° and 78°. The average high for August is 99° with an average low of 77°. 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 Duncanville. See also: September | October | November.
