S
M
T
W
T
F
S
26
84°
66°
27
86°
66°
28
88°
70°
29
N/A
30
84°
65°
31
88°
68°
1
90°
72°
2
81°
71°
3
80°
68°
4
84°
67°
5
88°
69°
6
87°
70°
7
89°
69°
8
89°
68°
9
87°
67°
10
88°
67°
11
87°
66°
12
84°
68°
13
83°
69°
14
89°
68°
15
85°
64°
16
82°
63°
17
83°
67°
18
88°
65°
19
82°
64°
20
82°
64°
21
85°
68°
22
88°
67°
23
85°
64°
24
81°
62°
25
82°
62°
26
81°
61°
27
80°
62°
28
83°
65°
29
85°
64°
30
87°
67°
31
87°
68°
1
86°
67°
2
86°
66°
3
79°
63°
4
79°
60°
5
78°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Ashburn
Ashburn's August 2026 forecast shows daily high temperatures ranging from 78° to 90°, with overnight lows between 58° and 72°. The average high for August is 85° with an average low of 66°. 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 Ashburn. See also: September | October | November.
