S
M
T
W
T
F
S
26
85°
66°
27
84°
72°
28
90°
70°
29
90°
68°
30
93°
69°
31
92°
70°
1
89°
65°
2
Hist. Avg.
86°
66°
3
Hist. Avg.
86°
66°
4
Hist. Avg.
86°
66°
5
Hist. Avg.
85°
66°
6
Hist. Avg.
85°
66°
7
Hist. Avg.
85°
66°
8
Hist. Avg.
85°
66°
9
Hist. Avg.
85°
66°
10
Hist. Avg.
85°
66°
11
Hist. Avg.
85°
66°
12
Hist. Avg.
85°
66°
13
Hist. Avg.
85°
66°
14
Hist. Avg.
85°
66°
15
Hist. Avg.
85°
65°
16
Hist. Avg.
85°
65°
17
Hist. Avg.
85°
65°
18
Hist. Avg.
85°
65°
19
Hist. Avg.
85°
65°
20
Hist. Avg.
84°
65°
21
Hist. Avg.
84°
65°
22
Hist. Avg.
84°
64°
23
Hist. Avg.
84°
64°
24
Hist. Avg.
84°
64°
25
Hist. Avg.
84°
64°
26
Hist. Avg.
84°
64°
27
Hist. Avg.
84°
64°
28
Hist. Avg.
83°
63°
29
Hist. Avg.
83°
63°
30
Hist. Avg.
83°
63°
31
Hist. Avg.
83°
62°
1
Hist. Avg.
82°
62°
2
Hist. Avg.
82°
62°
3
Hist. Avg.
82°
62°
4
Hist. Avg.
82°
61°
5
Hist. Avg.
81°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Ashburn
Ashburn's August 2026 forecast shows daily high temperatures ranging from 84° to 93°, with overnight lows between 65° and 72°. 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 Ashburn. See also: September | October | November.