S
M
T
W
T
F
S
26
88°
70°
27
89°
71°
28
86°
71°
29
85°
70°
30
87°
71°
31
89°
71°
1
88°
70°
2
87°
71°
3
89°
71°
4
89°
70°
5
88°
70°
6
89°
69°
7
89°
70°
8
90°
70°
9
89°
71°
10
89°
70°
11
87°
69°
12
86°
70°
13
85°
70°
14
83°
69°
15
84°
65°
16
83°
67°
17
83°
67°
18
84°
66°
19
84°
68°
20
82°
69°
21
83°
69°
22
84°
68°
23
86°
68°
24
89°
68°
25
89°
69°
26
85°
68°
27
84°
65°
28
86°
66°
29
89°
67°
30
86°
68°
31
87°
67°
1
86°
67°
2
83°
66°
3
82°
67°
4
82°
62°
5
81°
61°
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 81° to 90°, with overnight lows between 61° and 71°. The average high for August is 86° with an average low of 68°. 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.