S
M
T
W
T
F
S
27
58°
54°
28
56°
54°
29
64°
55°
30
60°
56°
1
72°
54°
2
83°
59°
3
68°
47°
4
61°
42°
5
68°
45°
6
60°
40°
7
59°
33°
8
71°
49°
9
65°
43°
10
60°
36°
11
56°
35°
12
71°
49°
13
59°
43°
14
65°
46°
15
60°
39°
16
61°
38°
17
52°
30°
18
52°
27°
19
56°
31°
20
67°
34°
21
57°
41°
22
63°
41°
23
56°
31°
24
59°
28°
25
61°
30°
26
68°
30°
27
54°
33°
28
49°
41°
29
65°
52°
30
65°
39°
31
53°
31°
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 49° to 65°, with overnight lows between 31° and 52°. The average high for October is 58° with an average low of 41°. 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.
