S
M
T
W
T
F
S
27
73°
48°
28
74°
50°
29
75°
55°
30
83°
50°
1
87°
59°
2
78°
60°
3
71°
54°
4
76°
51°
5
70°
45°
6
68°
39°
7
80°
40°
8
77°
48°
9
75°
44°
10
64°
49°
11
67°
58°
12
75°
61°
13
84°
58°
14
86°
61°
15
70°
64°
16
75°
52°
17
55°
38°
18
63°
35°
19
67°
35°
20
68°
36°
21
71°
38°
22
68°
40°
23
66°
39°
24
71°
39°
25
70°
39°
26
73°
41°
27
70°
43°
28
65°
41°
29
63°
38°
30
62°
37°
31
58°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Portland
Portland's October 2026 forecast shows daily high temperatures ranging from 58° to 73°, with overnight lows between 37° and 43°. The average high for October is 67° with an average low of 40°. 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 Portland. See also: November | December | January.
