S
M
T
W
T
F
S
31
77°
50°
1
72°
48°
2
71°
51°
3
74°
57°
4
78°
61°
5
81°
62°
6
82°
53°
7
79°
61°
8
78°
54°
9
79°
55°
10
74°
53°
11
73°
54°
12
76°
55°
13
80°
55°
14
76°
52°
15
75°
54°
16
76°
56°
17
77°
55°
18
77°
54°
19
76°
54°
20
75°
56°
21
76°
56°
22
76°
57°
23
75°
57°
24
75°
65°
25
85°
66°
26
86°
66°
27
83°
65°
28
87°
66°
29
86°
67°
30
86°
66°
1
87°
61°
2
83°
62°
3
85°
65°
4
Hist. Avg.
85°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Denison
Denison's June 2026 forecast shows daily high temperatures ranging from 71° to 87°, with overnight lows between 48° and 67°. The average high for June is 79° with an average low of 58°. 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 Denison. See also: July | August | September.