S
M
T
W
T
F
S
26
74°
51°
27
74°
53°
28
72°
49°
29
74°
50°
30
77°
58°
31
81°
59°
1
83°
59°
2
82°
58°
3
82°
56°
4
78°
50°
5
73°
48°
6
73°
48°
7
74°
50°
8
76°
51°
9
76°
54°
10
77°
57°
11
78°
56°
12
79°
57°
13
80°
58°
14
79°
57°
15
81°
53°
16
77°
49°
17
76°
49°
18
76°
55°
19
78°
54°
20
78°
48°
21
71°
55°
22
78°
53°
23
76°
56°
24
78°
54°
25
76°
51°
26
74°
47°
27
75°
54°
28
71°
55°
29
71°
54°
30
79°
51°
31
75°
48°
1
70°
49°
2
68°
45°
3
67°
51°
4
70°
53°
5
75°
51°
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 83°, with overnight lows between 45° and 59°. The average high for August is 76° with an average low of 53°. 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.
