S
M
T
W
T
F
S
26
89°
69°
27
90°
73°
28
92°
68°
29
91°
73°
30
89°
75°
31
93°
69°
1
93°
68°
2
88°
74°
3
91°
73°
4
93°
70°
5
89°
72°
6
86°
68°
7
87°
66°
8
85°
66°
9
86°
68°
10
89°
67°
11
87°
68°
12
86°
68°
13
86°
69°
14
85°
67°
15
86°
73°
16
91°
72°
17
91°
72°
18
90°
66°
19
87°
65°
20
86°
66°
21
88°
71°
22
90°
70°
23
91°
71°
24
92°
72°
25
91°
71°
26
91°
70°
27
88°
66°
28
88°
66°
29
84°
65°
30
Hist. Avg.
86°
69°
31
Hist. Avg.
86°
69°
1
Hist. Avg.
85°
69°
2
Hist. Avg.
85°
68°
3
Hist. Avg.
85°
68°
4
Hist. Avg.
85°
68°
5
Hist. Avg.
84°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Washington
Washington's August 2026 forecast shows daily high temperatures ranging from 84° to 93°, with overnight lows between 65° and 75°. The average high for August is 89° with an average low of 69°. 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.
