S
M
T
W
T
F
S
26
79°
49°
27
82°
50°
28
80°
48°
29
77°
54°
30
76°
54°
31
75°
49°
1
76°
48°
2
77°
49°
3
77°
52°
4
79°
57°
5
85°
57°
6
84°
54°
7
85°
57°
8
85°
49°
9
76°
50°
10
79°
53°
11
81°
50°
12
80°
49°
13
78°
55°
14
83°
54°
15
85°
53°
16
86°
55°
17
86°
55°
18
84°
52°
19
78°
56°
20
76°
45°
21
75°
50°
22
75°
51°
23
78°
53°
24
81°
49°
25
84°
47°
26
83°
54°
27
77°
50°
28
72°
47°
29
72°
47°
30
74°
46°
31
78°
51°
1
74°
48°
2
72°
47°
3
74°
46°
4
71°
45°
5
72°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Cascade Locks
Cascade Locks's August 2026 forecast shows daily high temperatures ranging from 71° to 86°, with overnight lows between 43° and 57°. The average high for August is 79° 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 August weather will actually feel in Cascade Locks. See also: September | October | November.