S
M
T
W
T
F
S
31
76°
51°
1
75°
49°
2
74°
46°
3
78°
50°
4
79°
54°
5
85°
58°
6
84°
59°
7
81°
56°
8
83°
56°
9
85°
60°
10
82°
60°
11
83°
59°
12
79°
53°
13
74°
58°
14
75°
53°
15
76°
51°
16
73°
52°
17
74°
52°
18
75°
53°
19
76°
53°
20
79°
55°
21
78°
56°
22
76°
55°
23
76°
60°
24
77°
61°
25
79°
55°
26
77°
55°
27
83°
62°
28
82°
61°
29
79°
58°
30
78°
56°
1
78°
56°
2
79°
58°
3
80°
62°
4
85°
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 85°, with overnight lows between 46° and 63°. The average high for June is 79° with an average low of 56°. 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.