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
78°
51°
6
75°
49°
7
77°
47°
8
78°
55°
9
65°
47°
10
61°
44°
11
68°
44°
12
71°
45°
13
67°
48°
14
68°
50°
15
67°
49°
16
66°
51°
17
67°
51°
18
66°
49°
19
66°
50°
20
64°
49°
21
61°
47°
22
64°
44°
23
65°
45°
24
62°
46°
25
63°
45°
26
63°
45°
27
62°
46°
28
61°
47°
29
60°
44°
30
60°
48°
31
54°
45°
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 54° to 78°, with overnight lows between 44° and 55°. The average high for October is 65° 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.
