S
M
T
W
T
F
S
30
86°
68°
31
87°
67°
1
86°
67°
2
83°
66°
3
82°
67°
4
82°
62°
5
81°
61°
6
82°
63°
7
83°
65°
8
85°
65°
9
81°
64°
10
81°
64°
11
80°
59°
12
83°
60°
13
86°
62°
14
81°
57°
15
80°
57°
16
79°
56°
17
78°
57°
18
80°
58°
19
84°
57°
20
84°
60°
21
83°
61°
22
84°
62°
23
83°
61°
24
81°
58°
25
82°
58°
26
83°
60°
27
83°
56°
28
82°
59°
29
83°
60°
30
82°
60°
1
82°
59°
2
82°
59°
3
82°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Crossville
Crossville's September 2026 forecast shows daily high temperatures ranging from 78° to 87°, with overnight lows between 52° and 68°. The average high for September is 82° with an average low of 61°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Crossville. See also: October | November | December.
