S
M
T
W
T
F
S
26
87°
67°
27
88°
67°
28
88°
68°
29
87°
68°
30
88°
67°
31
86°
66°
1
80°
65°
2
80°
62°
3
81°
63°
4
80°
66°
5
80°
65°
6
81°
64°
7
81°
63°
8
83°
64°
9
84°
65°
10
85°
66°
11
84°
65°
12
86°
65°
13
85°
64°
14
89°
64°
15
89°
64°
16
87°
62°
17
82°
63°
18
82°
65°
19
84°
58°
20
83°
56°
21
80°
55°
22
79°
55°
23
80°
57°
24
80°
56°
25
81°
56°
26
80°
61°
27
81°
60°
28
83°
56°
29
78°
56°
30
79°
55°
31
77°
54°
1
77°
55°
2
79°
58°
3
78°
55°
4
78°
54°
5
79°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Delaware
Delaware's August 2026 forecast shows daily high temperatures ranging from 77° to 89°, with overnight lows between 54° and 68°. The average high for August is 82° with an average low of 61°. 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 Delaware. See also: September | October | November.
