S
M
T
W
T
F
S
27
74°
44°
28
73°
48°
29
78°
49°
30
N/A
1
85°
59°
2
65°
44°
3
68°
44°
4
69°
46°
5
63°
39°
6
63°
44°
7
71°
48°
8
75°
45°
9
70°
43°
10
65°
42°
11
67°
44°
12
67°
43°
13
65°
43°
14
66°
42°
15
59°
39°
16
69°
46°
17
69°
47°
18
68°
46°
19
67°
42°
20
57°
38°
21
55°
37°
22
55°
36°
23
63°
45°
24
67°
44°
25
67°
43°
26
65°
36°
27
53°
33°
28
59°
34°
29
58°
38°
30
56°
36°
31
63°
42°
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 53° to 85°, with overnight lows between 33° and 59°. The average high for October is 65° with an average low of 42°. 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.
