S
M
T
W
T
F
S
30
77°
48°
31
78°
50°
1
76°
56°
2
75°
57°
3
75°
55°
4
74°
53°
5
75°
48°
6
74°
49°
7
76°
48°
8
75°
50°
9
75°
48°
10
77°
47°
11
78°
52°
12
74°
51°
13
Hist. Avg.
78°
50°
14
Hist. Avg.
77°
50°
15
Hist. Avg.
77°
50°
16
Hist. Avg.
77°
50°
17
Hist. Avg.
76°
50°
18
Hist. Avg.
76°
49°
19
Hist. Avg.
76°
49°
20
Hist. Avg.
75°
49°
21
Hist. Avg.
75°
49°
22
Hist. Avg.
74°
49°
23
Hist. Avg.
74°
48°
24
Hist. Avg.
74°
48°
25
Hist. Avg.
73°
48°
26
Hist. Avg.
73°
48°
27
Hist. Avg.
72°
47°
28
Hist. Avg.
72°
47°
29
Hist. Avg.
71°
47°
30
Hist. Avg.
71°
47°
1
Hist. Avg.
70°
46°
2
Hist. Avg.
70°
46°
3
Hist. Avg.
70°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Scappoose
Scappoose's September 2026 forecast shows daily high temperatures ranging from 74° to 78°, with overnight lows between 47° and 57°. The average high for September is 76° with an average low of 51°. 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 Scappoose. See also: October | November | December.
