S
M
T
W
T
F
S
27
65°
48°
28
64°
46°
29
63°
53°
30
65°
49°
1
65°
52°
2
70°
54°
3
67°
52°
4
70°
52°
5
68°
54°
6
66°
52°
7
68°
50°
8
68°
52°
9
65°
51°
10
67°
50°
11
68°
52°
12
68°
50°
13
65°
51°
14
61°
47°
15
64°
52°
16
61°
47°
17
59°
42°
18
62°
45°
19
64°
48°
20
65°
50°
21
62°
49°
22
59°
47°
23
57°
49°
24
60°
49°
25
60°
48°
26
59°
43°
27
54°
40°
28
59°
46°
29
58°
48°
30
54°
48°
31
59°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Seattle
Seattle's October 2026 forecast shows daily high temperatures ranging from 54° to 70°, with overnight lows between 40° and 54°. The average high for October is 63° with an average low of 49°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how October weather will actually feel in Seattle. See also: November | December | January.
