S
M
T
W
T
F
S
26
97°
75°
27
97°
76°
28
98°
76°
29
98°
75°
30
97°
76°
31
98°
76°
1
98°
74°
2
97°
74°
3
96°
71°
4
95°
71°
5
98°
72°
6
97°
74°
7
99°
75°
8
100°
74°
9
99°
72°
10
99°
75°
11
98°
71°
12
96°
72°
13
95°
71°
14
94°
71°
15
96°
74°
16
96°
74°
17
97°
73°
18
95°
73°
19
97°
72°
20
97°
72°
21
98°
73°
22
98°
71°
23
97°
70°
24
98°
71°
25
96°
72°
26
95°
71°
27
94°
70°
28
92°
69°
29
93°
69°
30
93°
72°
31
94°
73°
1
93°
71°
2
93°
70°
3
94°
69°
4
94°
70°
5
95°
71°
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 92° to 100°, with overnight lows between 69° and 76°. The average high for August is 96° with an average low of 72°. 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.
