S
M
T
W
T
F
S
26
80°
54°
27
75°
47°
28
72°
47°
29
80°
53°
30
80°
52°
31
Hist. Avg.
66°
46°
1
Hist. Avg.
66°
46°
2
Hist. Avg.
66°
46°
3
Hist. Avg.
67°
46°
4
Hist. Avg.
67°
46°
5
Hist. Avg.
67°
46°
6
Hist. Avg.
67°
46°
7
Hist. Avg.
67°
46°
8
Hist. Avg.
67°
46°
9
Hist. Avg.
67°
46°
10
Hist. Avg.
67°
46°
11
Hist. Avg.
67°
46°
12
Hist. Avg.
67°
46°
13
Hist. Avg.
67°
46°
14
Hist. Avg.
66°
46°
15
Hist. Avg.
66°
46°
16
Hist. Avg.
66°
46°
17
Hist. Avg.
66°
46°
18
Hist. Avg.
66°
46°
19
Hist. Avg.
66°
46°
20
Hist. Avg.
66°
46°
21
Hist. Avg.
66°
45°
22
Hist. Avg.
66°
45°
23
Hist. Avg.
66°
45°
24
Hist. Avg.
66°
45°
25
Hist. Avg.
65°
45°
26
Hist. Avg.
65°
45°
27
Hist. Avg.
65°
45°
28
Hist. Avg.
65°
45°
29
Hist. Avg.
65°
44°
30
Hist. Avg.
65°
44°
31
Hist. Avg.
64°
44°
1
Hist. Avg.
64°
44°
2
Hist. Avg.
64°
44°
3
Hist. Avg.
64°
44°
4
Hist. Avg.
64°
44°
5
Hist. Avg.
63°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Duncan
Duncan's August 2026 forecast shows daily high temperatures ranging from 72° to 80°, with overnight lows between 47° and 54°. The average high for August is 77° with an average low of 51°. 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.
