S
M
T
W
T
F
S
31
77°
50°
1
74°
47°
2
77°
49°
3
79°
55°
4
83°
58°
5
84°
62°
6
84°
64°
7
82°
63°
8
81°
64°
9
82°
65°
10
83°
65°
11
82°
65°
12
81°
58°
13
80°
62°
14
81°
59°
15
76°
56°
16
74°
55°
17
75°
55°
18
76°
56°
19
77°
58°
20
78°
63°
21
77°
64°
22
78°
63°
23
79°
64°
24
79°
62°
25
80°
61°
26
81°
65°
27
83°
65°
28
80°
61°
29
79°
58°
30
78°
59°
1
78°
58°
2
79°
59°
3
80°
66°
4
80°
60°
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 74° to 84°, with overnight lows between 47° and 66°. The average high for June is 79° with an average low of 60°. 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.