S
M
T
W
T
F
S
30
75°
46°
31
85°
52°
1
68°
57°
2
63°
54°
3
66°
52°
4
69°
51°
5
73°
55°
6
76°
55°
7
74°
57°
8
73°
55°
9
78°
56°
10
83°
57°
11
76°
54°
12
74°
56°
13
76°
55°
14
76°
57°
15
76°
53°
16
70°
55°
17
70°
51°
18
69°
53°
19
69°
49°
20
71°
54°
21
70°
49°
22
71°
54°
23
68°
48°
24
67°
47°
25
67°
47°
26
74°
49°
27
76°
51°
28
76°
53°
29
75°
55°
30
74°
55°
1
75°
54°
2
76°
54°
3
74°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Milwaukie
Milwaukie's September 2026 forecast shows daily high temperatures ranging from 63° to 83°, with overnight lows between 47° and 57°. The average high for September is 73° with an average low of 53°. 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 Milwaukie. See also: October | November | December.