S
M
T
W
T
F
S
31
77°
44°
1
77°
54°
2
75°
51°
3
82°
50°
4
88°
52°
5
92°
61°
6
92°
66°
7
91°
67°
8
73°
51°
9
82°
46°
10
90°
65°
11
96°
71°
12
97°
74°
13
90°
70°
14
92°
67°
15
81°
64°
16
77°
61°
17
86°
60°
18
93°
71°
19
75°
67°
20
84°
69°
21
82°
72°
22
82°
70°
23
82°
69°
24
81°
69°
25
81°
68°
26
82°
69°
27
83°
67°
28
85°
71°
29
87°
70°
30
86°
71°
1
87°
72°
2
86°
69°
3
83°
72°
4
84°
71°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Dewey Beach
Dewey Beach's June 2026 forecast shows daily high temperatures ranging from 75° to 87°, with overnight lows between 67° and 72°. The average high for June is 83° with an average low of 70°. 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 Dewey Beach. See also: July | August | September.