S
M
T
W
T
F
S
31
74°
52°
1
73°
55°
2
74°
50°
3
75°
57°
4
78°
60°
5
82°
60°
6
83°
59°
7
84°
61°
8
85°
53°
9
85°
51°
10
75°
51°
11
75°
53°
12
76°
58°
13
84°
58°
14
80°
62°
15
85°
60°
16
82°
56°
17
82°
59°
18
83°
60°
19
81°
56°
20
81°
56°
21
83°
65°
22
86°
64°
23
87°
65°
24
87°
58°
25
84°
57°
26
82°
57°
27
85°
66°
28
87°
60°
29
85°
66°
30
86°
60°
1
82°
58°
2
81°
60°
3
82°
62°
4
79°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Delaware
Delaware's June 2026 forecast shows daily high temperatures ranging from 73° to 87°, with overnight lows between 50° and 66°. The average high for June is 82° with an average low of 59°. 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 Delaware. See also: July | August | September.