S
M
T
W
T
F
S
26
85°
69°
27
87°
70°
28
84°
70°
29
84°
69°
30
85°
70°
31
87°
70°
1
89°
69°
2
88°
71°
3
89°
69°
4
88°
70°
5
88°
68°
6
84°
69°
7
89°
63°
8
85°
64°
9
85°
64°
10
88°
65°
11
89°
66°
12
90°
69°
13
90°
70°
14
89°
68°
15
88°
69°
16
84°
69°
17
84°
68°
18
85°
68°
19
89°
65°
20
83°
64°
21
84°
62°
22
84°
65°
23
85°
63°
24
84°
62°
25
86°
65°
26
87°
67°
27
88°
68°
28
87°
67°
29
88°
68°
30
87°
67°
31
87°
61°
1
84°
61°
2
81°
59°
3
83°
60°
4
86°
65°
5
85°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Roanoke
Roanoke's August 2026 forecast shows daily high temperatures ranging from 81° to 90°, with overnight lows between 59° and 71°. The average high for August is 86° 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 Roanoke. See also: September | October | November.