S
M
T
W
T
F
S
26
86°
60°
27
85°
62°
28
87°
62°
29
86°
58°
30
86°
60°
31
78°
54°
1
78°
55°
2
87°
60°
3
87°
60°
4
84°
58°
5
79°
56°
6
78°
55°
7
86°
60°
8
85°
58°
9
87°
62°
10
87°
59°
11
78°
58°
12
78°
56°
13
83°
58°
14
78°
58°
15
78°
56°
16
79°
55°
17
78°
55°
18
77°
54°
19
81°
58°
20
84°
57°
21
81°
60°
22
85°
61°
23
87°
57°
24
80°
60°
25
84°
59°
26
76°
53°
27
76°
54°
28
81°
57°
29
85°
59°
30
77°
51°
31
75°
59°
1
78°
52°
2
75°
52°
3
77°
51°
4
81°
56°
5
75°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Washougal
Washougal's August 2026 forecast shows daily high temperatures ranging from 75° to 87°, with overnight lows between 49° and 62°. The average high for August is 81° with an average low of 57°. 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 Washougal. See also: September | October | November.