S
M
T
W
T
F
S
31
68°
47°
1
76°
48°
2
86°
56°
3
69°
54°
4
69°
53°
5
63°
48°
6
60°
47°
7
67°
50°
8
65°
50°
9
65°
50°
10
67°
51°
11
69°
54°
12
71°
55°
13
74°
55°
14
73°
57°
15
74°
56°
16
71°
54°
17
69°
52°
18
71°
54°
19
69°
50°
20
73°
54°
21
75°
53°
22
68°
52°
23
66°
51°
24
67°
50°
25
71°
52°
26
77°
58°
27
78°
59°
28
78°
59°
29
77°
58°
30
76°
59°
1
77°
56°
2
73°
55°
3
76°
56°
4
78°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in South Seattle
South Seattle's June 2026 forecast shows daily high temperatures ranging from 60° to 78°, with overnight lows between 47° and 59°. The average high for June is 71° 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 South Seattle. See also: July | August | September.