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
72°
53°
17
75°
55°
18
81°
59°
19
83°
55°
20
77°
53°
21
81°
55°
22
86°
60°
23
85°
57°
24
80°
56°
25
75°
53°
26
76°
54°
27
79°
58°
28
81°
56°
29
74°
53°
30
71°
54°
1
69°
52°
2
73°
57°
3
75°
57°
4
74°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Issaquah
Issaquah's June 2026 forecast shows daily high temperatures ranging from 69° to 86°, with overnight lows between 52° and 60°. The average high for June is 77° 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 Issaquah. See also: July | August | September.
