S
M
T
W
T
F
S
31
80°
62°
1
83°
65°
2
84°
66°
3
85°
66°
4
86°
67°
5
85°
67°
6
83°
68°
7
86°
68°
8
87°
69°
9
89°
69°
10
88°
68°
11
87°
69°
12
81°
68°
13
81°
65°
14
82°
63°
15
82°
65°
16
83°
69°
17
87°
70°
18
89°
69°
19
90°
70°
20
92°
71°
21
93°
68°
22
90°
66°
23
90°
67°
24
91°
68°
25
86°
69°
26
92°
69°
27
93°
71°
28
86°
64°
29
92°
73°
30
92°
73°
1
93°
72°
2
93°
71°
3
92°
71°
4
94°
70°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Dennis
Dennis's June 2026 forecast shows daily high temperatures ranging from 80° to 94°, with overnight lows between 62° and 73°. The average high for June is 88° with an average low of 68°. 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 Dennis. See also: July | August | September.