S
M
T
W
T
F
S
26
63°
55°
27
66°
55°
28
70°
56°
29
71°
54°
30
73°
55°
31
77°
57°
1
65°
51°
2
67°
51°
3
73°
52°
4
74°
54°
5
79°
56°
6
80°
58°
7
78°
57°
8
73°
58°
9
71°
56°
10
71°
54°
11
72°
55°
12
74°
59°
13
77°
59°
14
75°
56°
15
71°
55°
16
71°
56°
17
73°
54°
18
74°
57°
19
73°
57°
20
78°
58°
21
82°
58°
22
72°
59°
23
68°
56°
24
72°
54°
25
79°
59°
26
72°
56°
27
69°
55°
28
69°
54°
29
66°
54°
30
62°
53°
31
68°
52°
1
69°
54°
2
64°
53°
3
61°
51°
4
63°
47°
5
67°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Duncan
Duncan's August 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for August is ° with an average low of °. 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 Duncan. See also: September | October | November.
