S
M
T
W
T
F
S
30
88°
54°
31
86°
62°
1
86°
60°
2
85°
59°
3
86°
55°
4
86°
52°
5
84°
51°
6
76°
50°
7
75°
50°
8
75°
58°
9
74°
51°
10
76°
56°
11
77°
48°
12
74°
55°
13
75°
58°
14
75°
54°
15
73°
51°
16
71°
50°
17
73°
53°
18
75°
56°
19
81°
51°
20
81°
50°
21
80°
48°
22
72°
45°
23
70°
48°
24
71°
53°
25
70°
45°
26
69°
47°
27
69°
48°
28
70°
50°
29
68°
45°
30
67°
46°
1
68°
52°
2
71°
53°
3
74°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Clackamas
Clackamas's September 2026 forecast shows daily high temperatures ranging from 67° to 88°, with overnight lows between 45° and 62°. The average high for September is 76° with an average low of 52°. 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 Clackamas. See also: October | November | December.
