S
M
T
W
T
F
S
27
75°
44°
28
N/A
29
70°
53°
30
74°
54°
1
80°
48°
2
78°
51°
3
82°
49°
4
82°
49°
5
79°
49°
6
78°
54°
7
79°
47°
8
78°
53°
9
64°
44°
10
60°
43°
11
67°
43°
12
69°
41°
13
66°
49°
14
69°
48°
15
69°
48°
16
70°
49°
17
69°
50°
18
67°
47°
19
69°
48°
20
67°
48°
21
62°
47°
22
65°
44°
23
66°
48°
24
60°
46°
25
63°
47°
26
64°
47°
27
64°
46°
28
60°
46°
29
61°
44°
30
61°
48°
31
54°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Lake Oswego
Lake Oswego's October 2026 forecast shows daily high temperatures ranging from 54° to 78°, with overnight lows between 41° and 53°. 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 Lake Oswego. See also: November | December | January.
