S
M
T
W
T
F
S
26
87°
59°
27
86°
59°
28
87°
56°
29
88°
56°
30
87°
53°
31
82°
52°
1
83°
56°
2
87°
56°
3
88°
55°
4
87°
54°
5
86°
51°
6
83°
52°
7
85°
59°
8
87°
59°
9
89°
54°
10
88°
52°
11
86°
49°
12
81°
50°
13
82°
50°
14
83°
49°
15
82°
50°
16
84°
56°
17
86°
59°
18
86°
60°
19
87°
58°
20
88°
59°
21
85°
57°
22
78°
54°
23
78°
57°
24
82°
56°
25
77°
50°
26
76°
52°
27
76°
49°
28
75°
49°
29
77°
47°
30
77°
48°
31
78°
50°
1
76°
56°
2
75°
57°
3
75°
55°
4
74°
53°
5
75°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Scappoose
Scappoose's August 2026 forecast shows daily high temperatures ranging from 74° to 89°, with overnight lows between 47° and 60°. The average high for August is 82° with an average low of 54°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Scappoose. See also: September | October | November.