S
M
T
W
T
F
S
31
68°
47°
1
76°
46°
2
86°
53°
3
71°
60°
4
69°
55°
5
64°
53°
6
63°
48°
7
67°
47°
8
63°
50°
9
65°
53°
10
67°
53°
11
72°
47°
12
75°
55°
13
82°
54°
14
88°
57°
15
90°
61°
16
78°
59°
17
74°
54°
18
79°
54°
19
84°
59°
20
72°
56°
21
79°
57°
22
87°
62°
23
91°
62°
24
88°
56°
25
74°
57°
26
65°
52°
27
68°
51°
28
67°
53°
29
71°
54°
30
72°
55°
1
74°
54°
2
76°
53°
3
75°
55°
4
74°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Issaquah Plateau
Issaquah Plateau's June 2026 forecast shows daily high temperatures ranging from 65° to 91°, with overnight lows between 51° and 62°. The average high for June is 76° with an average low of 55°. 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 Issaquah Plateau. See also: July | August | September.
