S
M
T
W
T
F
S
31
63°
49°
1
65°
53°
2
64°
50°
3
72°
55°
4
73°
57°
5
63°
50°
6
68°
57°
7
74°
58°
8
70°
57°
9
65°
52°
10
66°
53°
11
65°
50°
12
66°
57°
13
65°
56°
14
65°
49°
15
67°
49°
16
71°
55°
17
66°
52°
18
65°
48°
19
67°
52°
20
75°
58°
21
77°
57°
22
79°
58°
23
78°
49°
24
68°
51°
25
69°
50°
26
68°
53°
27
74°
58°
28
73°
59°
29
76°
60°
30
75°
59°
1
71°
55°
2
70°
52°
3
77°
52°
4
78°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Seattle
Seattle's June 2026 forecast shows daily high temperatures ranging from 63° to 79°, with overnight lows between 48° and 60°. The average high for June is 70° with an average low of 54°. 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 Seattle. See also: July | August | September.
