S
M
T
W
T
F
S
26
82°
50°
27
81°
48°
28
81°
49°
29
80°
48°
30
79°
47°
31
73°
50°
1
75°
48°
2
76°
50°
3
75°
46°
4
74°
48°
5
75°
48°
6
74°
48°
7
77°
47°
8
78°
47°
9
79°
48°
10
80°
49°
11
77°
46°
12
74°
42°
13
73°
43°
14
74°
40°
15
73°
40°
16
72°
43°
17
75°
44°
18
75°
46°
19
77°
47°
20
79°
47°
21
79°
46°
22
77°
44°
23
78°
45°
24
77°
44°
25
73°
39°
26
71°
36°
27
70°
36°
28
69°
35°
29
69°
38°
30
72°
38°
31
74°
38°
1
77°
40°
2
77°
42°
3
76°
43°
4
77°
43°
5
77°
44°
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 69° to 82°, with overnight lows between 35° and 50°. The average high for August is 76° with an average low of 44°. 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.
