S
M
T
W
T
F
S
26
86°
70°
27
88°
73°
28
89°
73°
29
91°
70°
30
89°
67°
31
84°
67°
1
84°
69°
2
85°
68°
3
84°
67°
4
85°
68°
5
84°
68°
6
84°
71°
7
86°
72°
8
84°
73°
9
86°
73°
10
85°
72°
11
85°
72°
12
89°
70°
13
89°
72°
14
86°
72°
15
88°
71°
16
88°
71°
17
87°
66°
18
83°
66°
19
83°
67°
20
84°
66°
21
83°
68°
22
86°
69°
23
88°
69°
24
86°
71°
25
86°
72°
26
87°
71°
27
82°
66°
28
81°
65°
29
Hist. Avg.
84°
63°
30
Hist. Avg.
84°
63°
31
Hist. Avg.
83°
62°
1
Hist. Avg.
83°
62°
2
Hist. Avg.
83°
62°
3
Hist. Avg.
83°
62°
4
Hist. Avg.
82°
61°
5
Hist. Avg.
82°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Dewey Beach
Dewey Beach's August 2026 forecast shows daily high temperatures ranging from 81° to 91°, with overnight lows between 65° and 73°. The average high for August is 86° 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 August weather will actually feel in Dewey Beach. See also: September | October | November.
