S
M
T
W
T
F
S
27
66°
61°
28
71°
61°
29
74°
64°
30
80°
61°
1
83°
64°
2
86°
64°
3
67°
59°
4
65°
61°
5
74°
58°
6
66°
50°
7
72°
49°
8
81°
58°
9
77°
53°
10
72°
54°
11
67°
62°
12
76°
60°
13
82°
58°
14
90°
65°
15
77°
61°
16
80°
61°
17
62°
48°
18
62°
43°
19
69°
42°
20
71°
45°
21
68°
42°
22
70°
45°
23
62°
38°
24
64°
39°
25
66°
42°
26
70°
46°
27
71°
48°
28
63°
46°
29
64°
44°
30
67°
43°
31
60°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Washington
Washington's October 2026 forecast shows daily high temperatures ranging from 60° to 71°, with overnight lows between 38° and 50°. The average high for October is 66° with an average low of 44°. 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 Washington. See also: November | December | January.