S
M
T
W
T
F
S
27
81°
51°
28
78°
47°
29
70°
46°
30
71°
50°
1
75°
54°
2
80°
54°
3
80°
53°
4
79°
53°
5
80°
54°
6
79°
54°
7
80°
44°
8
77°
43°
9
67°
41°
10
65°
41°
11
66°
49°
12
66°
52°
13
70°
53°
14
76°
46°
15
78°
47°
16
72°
42°
17
68°
38°
18
63°
39°
19
63°
38°
20
64°
46°
21
68°
46°
22
72°
44°
23
73°
39°
24
63°
35°
25
61°
45°
26
60°
44°
27
64°
33°
28
59°
32°
29
58°
31°
30
55°
33°
31
62°
40°
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 55° to 81°, with overnight lows between 31° and 54°. The average high for October is 70° 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.