S
M
T
W
T
F
S
27
N/A
28
61°
46°
29
60°
50°
30
58°
46°
1
56°
49°
2
63°
52°
3
65°
54°
4
66°
51°
5
61°
50°
6
61°
47°
7
61°
48°
8
65°
49°
9
57°
47°
10
55°
44°
11
59°
46°
12
59°
39°
13
54°
48°
14
54°
47°
15
62°
47°
16
66°
47°
17
59°
48°
18
54°
42°
19
54°
44°
20
61°
41°
21
58°
41°
22
54°
44°
23
54°
39°
24
46°
42°
25
48°
43°
26
52°
46°
27
50°
43°
28
N/A
29
48°
38°
30
50°
38°
31
51°
36°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
October Weather in Duncan
Duncan's October 2026 forecast shows daily high temperatures ranging from 48° to 51°, with overnight lows between 36° and 38°. The average high for October is 50° with an average low of 37°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how October weather will actually feel in Duncan. See also: November | December | January.