S
M
T
W
T
F
S
30
85°
60°
31
86°
60°
1
84°
55°
2
82°
54°
3
82°
55°
4
81°
57°
5
79°
52°
6
77°
58°
7
80°
59°
8
84°
61°
9
85°
59°
10
76°
50°
11
74°
52°
12
81°
55°
13
82°
59°
14
83°
58°
15
82°
55°
16
77°
50°
17
74°
51°
18
78°
53°
19
73°
53°
20
81°
55°
21
80°
58°
22
Hist. Avg.
76°
49°
23
Hist. Avg.
76°
48°
24
Hist. Avg.
75°
48°
25
Hist. Avg.
75°
48°
26
Hist. Avg.
74°
48°
27
Hist. Avg.
74°
47°
28
Hist. Avg.
74°
47°
29
Hist. Avg.
73°
47°
30
Hist. Avg.
73°
47°
1
Hist. Avg.
72°
46°
2
Hist. Avg.
72°
46°
3
Hist. Avg.
71°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in West Linn
West Linn's September 2026 forecast shows daily high temperatures ranging from 73° to 86°, with overnight lows between 50° and 61°. The average high for September is 80° with an average low of 56°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in West Linn. See also: October | November | December.
