S
M
T
W
T
F
S
28
74°
50°
29
74°
56°
30
78°
51°
1
72°
50°
2
71°
51°
3
73°
53°
4
71°
52°
5
72°
50°
6
71°
51°
7
72°
52°
8
72°
54°
9
73°
55°
10
76°
59°
11
77°
58°
12
78°
59°
13
79°
60°
14
74°
55°
15
73°
53°
16
71°
53°
17
73°
54°
18
74°
53°
19
73°
53°
20
73°
54°
21
74°
52°
22
73°
53°
23
79°
56°
24
77°
56°
25
78°
55°
26
80°
60°
27
79°
56°
28
77°
53°
29
74°
54°
30
73°
53°
31
74°
55°
1
75°
56°
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 71° to 80°, with overnight lows between 50° and 60°. The average high for July is 74° with an average low of 54°. 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.
