S
M
T
W
T
F
S
26
80°
60°
27
81°
53°
28
75°
55°
29
76°
59°
30
75°
57°
31
75°
52°
1
76°
53°
2
74°
52°
3
74°
53°
4
73°
52°
5
73°
51°
6
74°
54°
7
76°
57°
8
76°
58°
9
75°
60°
10
78°
55°
11
77°
60°
12
82°
59°
13
78°
56°
14
82°
52°
15
74°
51°
16
73°
55°
17
74°
51°
18
73°
50°
19
71°
51°
20
72°
51°
21
73°
52°
22
72°
50°
23
71°
53°
24
71°
56°
25
73°
50°
26
72°
59°
27
78°
59°
28
78°
58°
29
80°
51°
30
78°
49°
31
69°
48°
1
70°
48°
2
69°
56°
3
73°
51°
4
73°
46°
5
67°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Washington
Washington's August 2026 forecast shows daily high temperatures ranging from 67° to 82°, with overnight lows between 46° and 60°. The average high for August is 75° 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 Washington. See also: September | October | November.
