S
M
T
W
T
F
S
27
75°
48°
28
72°
43°
29
71°
58°
30
72°
54°
1
80°
49°
2
77°
50°
3
81°
48°
4
82°
48°
5
74°
55°
6
73°
52°
7
77°
51°
8
84°
54°
9
73°
50°
10
65°
49°
11
65°
46°
12
68°
49°
13
67°
48°
14
65°
50°
15
66°
49°
16
68°
50°
17
65°
50°
18
62°
46°
19
66°
49°
20
65°
50°
21
64°
47°
22
64°
44°
23
63°
49°
24
60°
45°
25
62°
46°
26
61°
44°
27
54°
41°
28
53°
41°
29
52°
42°
30
52°
42°
31
53°
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 52° to 84°, with overnight lows between 41° and 55°. The average high for October is 64° with an average low of 47°. 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.
