S
M
T
W
T
F
S
28
67°
53°
29
64°
54°
30
65°
54°
1
65°
53°
2
59°
51°
3
68°
53°
4
71°
52°
5
71°
51°
6
81°
54°
7
77°
58°
8
72°
58°
9
70°
55°
10
72°
58°
11
70°
53°
12
69°
51°
13
71°
51°
14
81°
57°
15
81°
58°
16
68°
56°
17
70°
55°
18
71°
58°
19
71°
54°
20
80°
58°
21
86°
62°
22
89°
62°
23
80°
61°
24
76°
59°
25
66°
56°
26
63°
55°
27
66°
55°
28
70°
56°
29
71°
54°
30
73°
55°
31
77°
57°
1
65°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Duncan
Duncan's July 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for July 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 July weather will actually feel in Duncan. See also: August | September | October.