S
M
T
W
T
F
S
27
79°
55°
28
70°
52°
29
68°
54°
30
70°
53°
1
68°
51°
2
65°
47°
3
64°
49°
4
64°
49°
5
65°
47°
6
63°
45°
7
64°
43°
8
63°
44°
9
64°
42°
10
68°
46°
11
63°
44°
12
60°
45°
13
59°
44°
14
59°
43°
15
58°
41°
16
57°
45°
17
58°
45°
18
59°
51°
19
66°
50°
20
60°
50°
21
58°
42°
22
58°
45°
23
60°
49°
24
64°
47°
25
65°
49°
26
63°
44°
27
61°
45°
28
56°
48°
29
54°
49°
30
56°
47°
31
55°
42°
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 79°, with overnight lows between 41° and 55°. The average high for October is 62° 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.
