S
M
T
W
T
F
S
31
63°
47°
1
65°
51°
2
64°
48°
3
72°
53°
4
73°
53°
5
63°
48°
6
68°
55°
7
74°
54°
8
71°
55°
9
66°
50°
10
67°
51°
11
65°
48°
12
66°
55°
13
66°
54°
14
67°
46°
15
67°
46°
16
72°
53°
17
67°
50°
18
65°
46°
19
67°
50°
20
75°
56°
21
78°
55°
22
79°
56°
23
78°
47°
24
69°
48°
25
69°
47°
26
68°
51°
27
74°
56°
28
73°
57°
29
76°
58°
30
77°
57°
1
71°
53°
2
71°
50°
3
77°
49°
4
79°
55°
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 63° to 79°, with overnight lows between 46° and 58°. The average high for June is 70° with an average low of 52°. 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.
