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