S
M
T
W
T
F
S
26
87°
65°
27
85°
63°
28
83°
64°
29
83°
65°
30
85°
66°
31
83°
64°
1
84°
67°
2
84°
64°
3
85°
64°
4
83°
66°
5
84°
68°
6
89°
67°
7
89°
69°
8
88°
67°
9
84°
66°
10
85°
65°
11
82°
63°
12
82°
64°
13
83°
64°
14
84°
63°
15
82°
62°
16
83°
63°
17
82°
62°
18
83°
62°
19
86°
64°
20
88°
68°
21
88°
64°
22
87°
66°
23
87°
66°
24
86°
61°
25
82°
61°
26
82°
67°
27
88°
66°
28
85°
66°
29
87°
66°
30
86°
67°
31
87°
65°
1
86°
59°
2
85°
58°
3
79°
59°
4
79°
60°
5
Hist. Avg.
81°
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 79° to 89°, with overnight lows between 58° and 69°. The average high for August is 85° with an average low of 64°. 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.
