S
M
T
W
T
F
S
30
83°
54°
31
80°
55°
1
81°
57°
2
83°
56°
3
82°
56°
4
81°
55°
5
75°
55°
6
76°
53°
7
81°
53°
8
81°
55°
9
80°
55°
10
80°
54°
11
79°
53°
12
80°
54°
13
80°
54°
14
79°
53°
15
80°
53°
16
72°
52°
17
79°
53°
18
80°
52°
19
74°
51°
20
73°
49°
21
71°
51°
22
72°
45°
23
73°
43°
24
73°
43°
25
75°
46°
26
76°
49°
27
72°
48°
28
69°
45°
29
69°
46°
30
68°
47°
1
70°
40°
2
68°
37°
3
66°
37°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Troutdale
Troutdale's September 2026 forecast shows daily high temperatures ranging from 66° to 83°, with overnight lows between 37° and 57°. The average high for September is 76° with an average low of 50°. 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 Troutdale. See also: October | November | December.
