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
85°
67°
20
84°
68°
21
84°
70°
22
82°
70°
23
76°
69°
24
78°
69°
25
85°
68°
26
83°
69°
27
83°
68°
28
84°
69°
29
85°
70°
30
89°
71°
1
89°
70°
2
88°
69°
3
89°
70°
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 76° to 89°, with overnight lows between 68° and 71°. The average high for June is 84° with an average low of 69°. 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.