S
M
T
W
T
F
S
31
95°
72°
1
95°
72°
2
90°
70°
3
88°
68°
4
90°
70°
5
86°
70°
6
88°
68°
7
91°
74°
8
94°
73°
9
91°
73°
10
94°
74°
11
95°
74°
12
87°
70°
13
93°
72°
14
87°
68°
15
84°
66°
16
83°
66°
17
85°
68°
18
90°
73°
19
93°
72°
20
90°
69°
21
85°
71°
22
88°
73°
23
89°
74°
24
92°
74°
25
93°
73°
26
93°
75°
27
92°
74°
28
91°
74°
29
90°
73°
30
91°
75°
1
94°
75°
2
95°
76°
3
96°
76°
4
96°
74°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Duncan
Duncan's June 2026 forecast shows daily high temperatures ranging from 83° to 96°, with overnight lows between 66° and 76°. The average high for June is 91° with an average low of 72°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how June weather will actually feel in Duncan. See also: July | August | September.