S
M
T
W
T
F
S
27
N/A
28
96°
79°
29
97°
80°
30
97°
84°
1
97°
77°
2
95°
78°
3
91°
77°
4
81°
77°
5
90°
76°
6
93°
72°
7
94°
72°
8
92°
70°
9
95°
68°
10
93°
75°
11
91°
78°
12
91°
79°
13
92°
77°
14
92°
76°
15
90°
75°
16
88°
64°
17
81°
63°
18
77°
63°
19
79°
66°
20
80°
65°
21
82°
64°
22
78°
64°
23
77°
60°
24
76°
59°
25
76°
60°
26
78°
60°
27
79°
61°
28
79°
62°
29
80°
67°
30
78°
66°
31
78°
66°
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 76° to 95°, with overnight lows between 59° and 79°. The average high for October is 83° with an average low of 67°. 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.
